Section 1: Electricity 

Electric Force 
56:18 
 
Intro 
0:00  
 
Electric Charge 
0:18  
 
 Matter Consists of Atom 
1:01  
 
 Two Types of Particles: Protons & Neutrons 
1:48  
 
 Object with Excess Electrons: Negatively Charged 
7:58  
 
 Carbon Atom 
8:30  
 
 Positively Charged Object 
9:55  
 
Electric Charge 
10:07  
 
 Rubber Rod Rubs Against Fur (Negative Charge) 
10:16  
 
 Glass Rod Rub Against Silk (Positive Charge) 
11:48  
 
 Hanging Rubber Rod 
12:44  
 
Conductors and Insulators 
16:00  
 
 Electrons Close to Nucleus 
18:34  
 
 Conductors Have Mobile Charge 
21:30  
 
 Insulators: No Moving Electrons 
23:06  
 
 Copper Wire Connected to Excess Negative charge 
23:22  
 
 Other End Connected to Excess Positive Charge 
24:09  
 
Charging a Metal Object 
27:25  
 
 By Contact 
28:05  
 
 Metal Sphere on an Insulating Stand 
28:16  
 
 Charging by Induction 
30:59  
 
 Negative Rubber Rod 
31:26  
 
 Size of Atom 
36:08  
 
Extra Example 1: Three Metallic Objects 
7:32  
 
Extra Example 2: Rubber Rod and Two Metal Spheres 
6:25  

Coulomb's Law 
1:27:18 
 
Intro 
0:00  
 
Coulomb's Law 
0:59  
 
 Two Point Charges by Distance R 
1:11  
 
 Permitivity of Free Space 
5:28  
 
Charges on the Vertices of a Triangle 
8:00  
 
 3 Charges on Vertices of Right Triangle 
8:29  
 
 Charge of 4, 5 and 2 microCoulombs 
10:00  
 
 Force Acting on Each Charge 
10:58  
 
Charges on a Line 
21:29  
 
 2 Charges on XAxis 
22:40  
 
 Where Should Q should be Placed, Net Force =0 
23:23  
 
Two Small Spheres Attached to String 
31:08  
 
 Adding Some Charge 
32:03  
 
 Equilibrium Net Force on Each Sphere = 0 
33:38  
 
Simple Harmonic Motion of Point Charge 
37:40  
 
 Two Charges on YAxis 
37:55  
 
 Charge is Attracted 
39:52  
 
 Magnitude of Net Force on Q 
42:23  
 
Extra Example 1: Vertices of Triangle 
9:39  
 
Extra Example 2: Tension in String 
11:46  
 
Extra Example 3: Two Conducting Spheres 
6:29  
 
Extra Example 4: Force on Charge 
9:21  

Electric Field 
1:37:24 
 
Intro 
0:00  
 
Definition of Electric Field 
0:11  
 
 Q1 Produces Electric Field 
3:23  
 
 Charges on a Conductor 
4:26  
 
Field of a Point Charge 
13:10  
 
 Charge Point Between Two Fields 
13:20  
 
 Electric Field E=kq/r2 
14:29  
 
 Direction of the Charge Field 
15:10  
 
 Positive Charge, Field is Radially Out 
15:45  
 
Field of a Collection of a Point Charge 
19:40  
 
 Two Charges Q1,Q2 
19:56  
 
 Q1 Positive, Electric Field is Radially Out 
20:32  
 
 Q2 is Negative, Electric Field is Radially Inward 
20:46  
 
 4 Charges are Equal 
23:54  
 
Parallel Plate Capacitor 
25:42  
 
 Two Plates ,Separated by a Distance 
26:44  
 
 Fringe Effect 
30:26  
 
 E=Constant Between the Parallel Plate Capacitor 
30:40  
 
Electric Field Lines 
35:16  
 
 Pictorial Representation of Electric Field 
35:30  
 
 Electric Lines are Tangent to the Vector 
35:57  
 
 Lines Start at Positive Charge, End on Negative Charge 
41:24  
 
 Parallel Line Proportional to Charge 
45:51  
 
 Lines Never Cross 
46:00  
 
Conductors and Shielding 
49:33  
 
 Static Equilibrium 
51:09  
 
 No Net Moment of Charge 
53:09  
 
 Electric Field is Perpendicular to the Surface of Conductor 
55:40  
 
Extra Example 1: Plastic Sphere Between Capacitor 
8:46  
 
Extra Example 2: Electron Between Capacitor 
11:52  
 
Extra Example 3: Zero Electric Field 
10:44  
 
Extra Example 4: Dimensional Analysis 
6:01  

Electric Field of a Continuous Charge Distribution 
1:40:12 
 
Intro 
0:00  
 
General Expression For E 
0:16  
 
 Magnitude of Electric Field 
1:29  
 
 Disk: Spread Charge Distribution 
5:04  
 
 Volume Contains Charges 
6:16  
 
Charged Rod One Dimension 
16:28  
 
 Rod in XAxis 
17:00  
 
 Charge Density 
17:49  
 
 Find Electric Field at Distance 'A' 
19:05  
 
Charged Rod, Cont. 
32:48  
 
 Origin at Center, Extends From L to +L 
33:11  
 
 Dividing Rod into Pieces 
34:50  
 
 Electric Field Produced At Point P 
35:09  
 
 Another Element 
37:43  
 
 'Y' Components of Electric Field 
42:15  
 
Charged Ring 
54:23  
 
 Find Electric Field Above the Center 
54:48  
 
Charged Disc 
58:43  
 
 Collection of Rings 
59:10  
 
Example 1: Charged Disk 
17:18  
 
Example 2: Semicircle with Charge 
7:49  
 
Example 3: Charged Cylindrical Charge 
13:53  

Gauss's Law 
1:27:00 
 
Intro 
0:00  
 
Electric Field Lines 
0:11  
 
 Magnitude of Field 
2:04  
 
 Unit Area and Unit Lines 
2:59  
 
 Number of Lines Passing Through the Unit 
6:45  
 
Electic Flux: Constant E 
6:51  
 
 Field Lines Equally Spaced 
7:10  
 
 Area Perpendicular To Field Lines 
7:46  
 
 Electric Flux 
8:36  
 
 Area Perpendicular to Electric Lines 
9:43  
 
 Tilt the Area 
10:58  
 
 Flux of E Through Area 
17:30  
 
Electric Flux: General Case 
20:46  
 
 Perpendicular at Different Directions 
23:24  
 
 Electric Field Given On a Patch 
27:10  
 
 Magnitude of Field 
28:53  
 
 Direction is Outward Normal 
29:34  
 
 Flux Through Patch 
30:36  
 
Example 
36:09  
 
 Electric Field in Whole Space 
37:16  
 
 Sphere of Radius 'r' 
37:30  
 
 Flux Through Sphere 
38:09  
 
Gauss's Law: Charge Outside 
46:02  
 
 Flux Through Radius Phase is Zero 
50:09  
 
 Outward normal 'n' 
54:55  
 
Gauss's Law: Charge Enclosed 
60:30  
 
 Drawing Cones 
60:51  
 
Example 1: Flux Through Square 
7:08  
 
Example 2: Flux Through Cube 
10:23  
 
Example 3: Flux Through Pyramid 
5:01  

Application of Gauss's Law, Part 1 
1:06:48 
 
Intro 
0:00  
 
When is Gauss Law Useful? 
0:18  
 
 Need a Surface S 
5:14  
 
 Gaussian Surface 
5:50  
 
Sphere of Charge 
10:11  
 
 Charge Density is Uniform 
10:30  
 
 Radius as 'A' 
11:23  
 
 Case 1: R>A 
11:58  
 
 Any Direction On Cone Is Same 
20:28  
 
 Case 2: R<A 
25:15  
 
 Point R Within the Surface 
25:30  
 
Concentric Cavity 
31:11  
 
 Inside Circle and Outside Circle 
31:48  
 
 R>A 
32:17  
 
 R<B 
36:40  
 
Radius Dependent Charge Density 
37:39  
 
 Sphere 
38:09  
 
 Total Charge: Q 
39:46  
 
 Spherical Shell 
40:13  
 
 Finding Electric Field R>A 
42:36  
 
 R<A 
44:14  
 
Example 1: Charged Sphere 
9:56  
 
Example 2: Charged Spherical Cavity 
11:06  

Application of Gauss's Law, Part 2 
1:19:19 
 
Intro 
0:00  
 
Infinitely Long Line of Charge 
0:13  
 
 All Points Same Magnitude 
5:02  
 
 E is Perpendicular to Line 
9:08  
 
 Gauss's Law Cannot be Applied to Finite Length 
15:50  
 
Infinitely Long Cylinder Of Charge 
16:05  
 
 Draw a Cylinder of Radius 'R' 
16:36  
 
 Line of Charge Along the Center 
18:25  
 
 R<A 
18:39  
 
 Electric Field of Special Direction 
19:06  
 
Infinite Sheet of Charge 
25:12  
 
 Electric Field Above the Sheet 
25:38  
 
 Point is Above Height, Cylinder Intersects 
26:29  
 
 Curved Path 
33:12  
 
Parallel Plate Capacitors 
37:16  
 
 Electric Field Between Sheets 
39:16  
 
Conductors 
41:55  
 
 Adding Charge to Conductors 
42:16  
 
 In Electrostatic Equilibrium Charges Stop Moving 
44:37  
 
 Electric Field is Perpendicular to Surface 
47:16  
 
 Excess Charge Must Reside on Surface 
47:38  
 
Example 1: Cylindrical Shell 
7:45  
 
Example 2: Wire Surrounded by Shell 
6:43  
 
Example 3: Sphere Surrounded by Spherical Shell 
7:30  

Electric Potential, Part 1 
1:26:57 
 
Intro 
0:00  
 
Potential Difference Between Two Points 
0:16  
 
 Electric Field in Space By Stationary Charges 
0:30  
 
 Point Charge Moves From A to B 
1:37  
 
 Electric Field Exerts a Force 
1:50  
 
 Electric Potential Energy 
5:34  
 
 Work Done By External Agent 
20:03  
 
 Change in Potential Energy is Equal to Amount of Work Done 
24:06  
 
Potential Difference in Uniform Electric Field 
27:59  
 
 Constant Electric Field 
28:22  
 
 Equipotential 
40:22  
 
Parallel Plates 
40:52  
 
 Electric Field is Perpendicular to Plate 
42:07  
 
 Charge Released at A from Rest 
49:00  
 
Motion of Charged Particle in a Uniform Electric Field 
51:55  
 
Example 1: Work by Moving Electrons 
3:45  
 
Example 2: Block and Spring 
13:52  
 
Example 3: Particle on String 
11:27  

Electric Potential, Part 2 
1:31:50 
 
Intro 
0:00  
 
Potential of a Point Charge 
0:32  
 
 Potential Difference Between A to B 
1:25  
 
 Draw a Circle 
9:12  
 
 Tangential to Sphere 
9:33  
 
 Moving Normally From Sphere 
12:33  
 
Potential Energy of a Collection of Charges 
26:33  
 
 Potential Energy of Two Charges 
26:44  
 
 Work Done in Assembling the Configuration 
27:29  
 
 Bringing From Infinity to New Location 
33:57  
 
 Work Done by External Agent 
36:22  
 
 Potential Energy of the System 
39:39  
 
 Potential Energy for Two Charges 
40:00  
 
Example 
44:49  
 
 Two Charges 
45:03  
 
 Speed at Infinity 
48:01  
 
Electric Field from the Potential 
51:12  
 
 Finding E if V is Given 
51:33  
 
Electric Dipole 
56:22  
 
 Two Equal and Opposite Charges Separated By a Distance 
56:32  
 
 If a << r1 or r2 
60:23  
 
Example 1: Two Point Charges 
17:56  
 
Example 2: Two Insulating Spheres 
7:31  
 
Example 3: Electric Potential of Space 
4:01  

Electric Potential, Part 3 
1:09:12 
 
Intro 
0:00  
 
 Continuous Charge Distribution 
0:27  
 
 Finding Potential for a Charge Point 
1:39  
 
 Potential Produced at P 
4:42  
 
Charged Ring 
8:38  
 
 Electric Field at Some Point of Axis 
9:13  
 
Charged Disk 
19:32  
 
 Collection of Ring 
20:40  
 
 Finding Potential Point Above the Ring 
22:19  
 
 Potential Due to The Ring 
23:40  
 
Finite Line of Charge 
35:56  
 
 Line of Change Along the XAxis and Yaxis 
36:11  
 
Example 1: Charged Rod 
8:52  
 
Example 2: Bent Semicircle 
4:48  
 
Example 3: Bent Semicircle with Variables 
4:52  

Electric Potential, Part 4 
1:11:16 
 
Intro 
0:00  
 
Charged Conductors 
0:12  
 
 Adding Excess Charge to a Conductor 
1:02  
 
 E=0 Inside Conductors 
1:50  
 
 Excess Charges Must Reside on Surface 
3:40  
 
 E Normal on the Surface 
9:31  
 
 Surface of Conductor is Equipotential 
11:59  
 
Conducting Sphere 
19:28  
 
 Adding Charge to the Sphere 
19:41  
 
 Electric Field Outside is Concentrated at Center 
20:05  
 
 Electric Potential is Same as Center 
23:01  
 
Example 
26:24  
 
 Two Spheres with Distance and of Different Size 
26:45  
 
 Connecting Both Spheres with Conducting Wire 
27:22  
 
Cavity Within a Conductor 
39:43  
 
 Hollow Conductor 
40:19  
 
 Electric Static Equilibrium 
41:13  
 
 Electric Field is Zero Within Cavity 
53:20  
 
Example 1: Neutral Conducting Sphere 
4:03  
 
Example 2: Conducting Sphere with Spherical Shell 
13:45  

Capacitor 
1:24:14 
 
Intro 
0:00  
 
Capacitance 
0:09  
 
 Consider Two Conductor s 
0:25  
 
 Electric Field Passing from Positive to Negative 
1:19  
 
 Potential Difference 
3:31  
 
 Defining Capacitance 
3:51  
 
Parallel Plate Capacitance 
8:30  
 
 Two Metallic Plates of Area 'a' and Distance 'd' 
8:46  
 
 Potential Difference between Plates 
13:12  
 
Capacitance with a Dielectric 
22:14  
 
 Applying Electric Field to a Capacitor 
22:44  
 
 Dielectric 
30:32  
 
Example 
34:56  
 
 Empty Capacitor 
35:12  
 
 Connecting Capacitor to a Battery 
35:26  
 
 Inserting Dielectric Between Plates 
39:02  
 
Energy of a Charged Capacitor 
43:01  
 
 Work Done in Moving a Charge, Difference in Potential 
47:48  
 
Example 
54:10  
 
 Parallel Plate Capacitor 
54:22  
 
 Connect and Disconnect the Battery 
55:27  
 
 Calculating Q=cv 
55:50  
 
 Withdraw Mica Sheet 
56:49  
 
 Word Done in Withdrawing the Mica 
60:23  
 
Extra Example 1: Parallel Plate Capacitor 
8:41  
 
Extra Example 2: Mica Dielectric 
15:01  

Combination of Capacitors 
1:03:23 
 
Intro 
0:00  
 
Parallel Combination 
0:20  
 
 Two Capacitors in Parallel With a Battery 
0:40  
 
 Electric Field is Outside 
5:47  
 
 Point A is Directly Connected to Positive Terminal 
7:57  
 
 Point B is Directly Connected to Negative Terminal 
8:10  
 
 Voltage Across Capacitor 
12:54  
 
 Energy Stored 
14:52  
 
Series Combination 
17:58  
 
 Two Capacitors Connected End to End With a Battery 
18:10  
 
 Equivalent Capacitor 
25:20  
 
 A is Same Potential 
26:59  
 
 C is Same Potential 
27:06  
 
 Potential Difference Across First Capacitor (VaVb) 
27:42  
 
 (VbVc) is Potential Difference Across Second Capacitor 
28:10  
 
 Energy Stored in C1,C2 
29:53  
 
Example 
31:07  
 
 Two Capacitor in Series, 2 in Parallel, 3 in Parallel, 1 Capacitor Connected 
31:28  
 
 Final Equivalent Circuit 
37:31  
 
Extra Example 1: Four Capacitors 
16:50  
 
Extra Example 2: Circuit with Switches 
8:25  

Calculating Capacitance 
55:14 
 
Intro 
0:00  
 
Considering a Sphere 
0:28  
 
 Placing Charge on Sphere 
2:14  
 
 On the Surface of Sphere 
4:12  
 
Spherical Capacitor 
9:20  
 
 Sphere of Radius a and Shell of Radius b 
9:40  
 
 Positive Charge on Outer Sphere 
11:02  
 
 Negative Charge on Inner Sphere 
11:26  
 
 Calculating Potential Difference 
11:38  
 
Parallel Plate Capacitor 
22:38  
 
 Two Plates with Charges Positive and Negative 
22:54  
 
 Separation of Plate 
25:10  
 
Cylindrical Capacitor 
28:40  
 
 Inner Cylinder and Outer Cylindrical Shell 
29:01  
 
 Linear Charge Density 
30:41  
 
Example 1: Parallel Plate Capacitor 
4:39  
 
Example 2: Spherical Capacitor 
8:51  

More on Filled Capacitors 
1:17:13 
 
Intro 
0:00  
 
Electric Dipole is an Electric Field : Torque 
0:13  
 
 Magnitude of Dipole 
1:15  
 
 Starts to Rotate 
5:38  
 
 Force qe to the Right 
5:59  
 
 Finding the Torque 
6:35  
 
Electric Dipole is an Electric Field : Potential Energy 
13:56  
 
 Electric Field Try's to Rotate 
14:43  
 
 Object on Center of Earth 
16:04  
 
 Applying Torque Equal and Opposite 
17:05  
 
Water Molecule 
25:43  
 
 Carbon Molecules 
31:39  
 
 Net Dipole Moment is Zero 
32:11  
 
 Induced Dipole Moment 
34:43  
 
Filled Capacitor 
35:27  
 
 Empty Capacitor with Charge on it 
35:44  
 
 Inserting a Dielectric 
36:08  
 
Capacitor Partially Filled with Metallic Slab 
44:33  
 
 Capacitor with Slab of Distance 'd' 
44:54  
 
Capacitor Partially Filled with a Dielectric Slab 
51:59  
 
 Change in Potential Difference 
53:28  
 
Example 1: Parallel Plate Capacitor 
13:37  
 
Example 2: Conducting Slab 
8:20  

Electric Current 
1:19:17 
 
Intro 
0:00  
 
Definition 
0:20  
 
 Consider a Wire ,Cylindrical 
0:40  
 
 Cross Sectional Area 
1:06  
 
 Crossing Charges Will be Counted 
2:50  
 
 Amount of Charge Crosses Cross Sectional Area 
3:29  
 
 Current I=q/t 
4:18  
 
 Charges Flowing in Opposite Direction 
5:58  
 
 Current Density 
6:19  
 
 Applying Electric Field 
11:50  
 
Current in a Wire 
15:24  
 
 Wire With a Cross Section Area 'A' 
15:33  
 
 Current Flowing to Right 
18:57  
 
 How Much Charge Crosses Area 'A' 
19:15  
 
 Drift Velocity 
20:02  
 
 Carriers in Cylinder 
22:40  
 
Ohm's Law 
24:58  
 
 VaVb = Electric Field times Length of Wire 
28:27  
 
 Ohm's Law 
28:54  
 
 Consider a Copper Wire of 1m , Cross Sectional Area 1cm/sq 
34:24  
 
Temperature Effect 
37:07  
 
 Heating a Wire 
37:05  
 
 Temperature CoEfficient of Resistivity 
39:57  
 
Battery EMF 
43:00  
 
 Connecting a Resistance to Battery 
44:30  
 
 Potential Difference at Terminal of Battery 
45:15  
 
Power 
53:30  
 
 Battery Connected with a Resistance 
53:47  
 
 Work Done on Charge 
56:55  
 
 Energy Lost Per Second 
60:35  
 
Extra Example 1: Current 
9:46  
 
Extra Example 2: Water Heater 
8:05  

Circuits 
1:34:08 
 
Intro 
0:00  
 
Simple Rules 
0:16  
 
 Resistance in Series 
0:33  
 
 Current Passing Per Second is Equal 
1:36  
 
 Potential Difference 
3:10  
 
 Parallel Circuit, R1, R2 
5:08  
 
 Battery, Current Starts From Positive Terminal to Negative Terminal 
10:08  
 
Series Combination of Resistances 
13:06  
 
 R1, R2 Connected to Battery 
13:35  
 
 VaVb=Ir1,VbVc=Ir2 
16:59  
 
 Three Resistance Connected in Series Req=r1+r2+r3 
18:55  
 
Parallel Combination of Resistance 
19:28  
 
 R1 and R2 Combined Parallel 
19:50  
 
 I=i1+i2 (Total Current) 
24:26  
 
 Requ=I/E 
24:51  
 
A Simple Circuit 
27:57  
 
 Current Splits 
29:15  
 
 Total Resistance 
31:52  
 
 Current I= 6/17.2 
35:10  
 
Another Simple Circuit 
37:46  
 
 Battery has Small Internal Resistance 
38:02  
 
 2 Ohms Internal Resistance, and Two Resistance in Parallel 
38:24  
 
 Drawing Circuit 
48:53  
 
 Finding Current 
52:06  
 
RC Circuit 
55:17  
 
 Battery , Resistance and Capacitance Connected 
55:30  
 
 Current is Function of Time 
58:00  
 
 R, C are Time Constants 
59:25  
 
Extra Example 1: Resistor Current/Power 
4:17  
 
Extra Example 2: Find Current 
6:03  
 
Extra Example 3: Find Current 
10:00  
 
Extra Example 4: Find Current 
13:49  

Kirchhoff's Law 
1:42:02 
 
Intro 
0:00  
 
First Kirchhoff Rule 
0:19  
 
 Two Resistance Connected With a Battery 
0:29  
 
 Many Resistance 
1:40  
 
 Increase in Potential from A to B 
4:46  
 
 Charge Flowing from Higher Potential to Lower Potential 
5:13  
 
Second Kirchhoff Rule 
9:17  
 
 Current Entering 
9:27  
 
 Total Current Arriving is Equal Current Leaving 
13:20  
 
Example 
14:10  
 
 Battery 6 V, Resistance 20, 30 Ohms and Another Battery 4v 
14:30  
 
 Current Entering I2+I3 
21:18  
 
Example 2 
31:20  
 
 2 Loop circuit with 6v and 12 v and Resistance, Find Current in Each Resistance 
32:29  
 
Example 3 
42:02  
 
 Battery and Resistance in Loops 
42:23  
 
Ammeters and Voltmeters 
56:22  
 
 Measuring Current is Introducing an Ammeter 
56:35  
 
 Connecting Voltmeter, High Resistance 
57:31  
 
Extra Example 1: Find Current 
18:47  
 
Extra Example 2: Find Current 
13:35  
 
Extra Example 3: Find Current 
10:23  

RC Circuits 
1:20:35 
 
Intro 
0:00  
 
Charging a Capacitor: Circuit Equation 
0:09  
 
 Circuit with a Resistance , Capacitance and a Battery 
0:20  
 
 Closing Switch at T=0 
1:36  
 
 Applying Kirchhoff's Rule 
6:26  
 
 Change in Potential is Zero 
6:52  
 
 Solution Tau dq/dt= ecq 
16:25  
 
Discharging a Capacitor 
27:14  
 
 Charged Capacitor Connect to Switch and Resistance 
27:30  
 
 Closing the Switch at T=0 
28:11  
 
Example 
36:50  
 
 12V Battery with Switch and Resistance 10mili ohms and Capacitor Connected 10 Micro Farad 
37:02  
 
 Time Constant 
38:58  
 
 Charge at q=0 at t=1sec 
40:16  
 
Example 
42:58  
 
 Switch With Capacitor and Resistance 
43:31  
 
 What Time Charge C Has Initial Valve 
45:17  
 
 How Long Charge Energy Stored in C to Drop Half of Initial Value 
46:55  
 
Example 1: RC Circuit 1 
6:49  
 
Example 2: RC Circuit 2 
12:53  
 
Example 3: RC Circuit 3 
10:42  
Section 2: Magnetism 

Magnetic Field 
1:38:19 
 
Intro 
0:00  
 
Magnets 
0:13  
 
 Compass Will Always Point North 
3:49  
 
 Moving a Compass Needle 
5:50  
 
Force on a Charged Particles 
10:37  
 
 Electric Field and Charge Particle Q 
10:48  
 
 Charge is Positive Force 
11:11  
 
 Charge Particle is At Rest 
13:38  
 
 Taking a Charged Particle and Moving to Right 
16:15  
 
 Using Right Hand Rule 
23:37  
 
 C= Magnitude of A, B 
26:30  
 
 Magnitude of C 
26:55  
 
Motion of Particle in Uniform Magnetic Field 
33:30  
 
 Magnetic Field has Same Direction 
34:02  
 
 Direction of Force 
38:40  
 
 Work Done By Force=0 
41:40  
 
 Force is Perpendicular With Velocity 
42:00  
 
Bending an Electron Beam 
48:09  
 
 Heating a Filament 
48:29  
 
 Kinetic Energy of Battery 
51:54  
 
 Introducing Magnetic Field 
52:10  
 
Velocity Selector 
53:45  
 
 Selecting Particles of Specific Velocity 
54:00  
 
 Parallel Plate Capacitor 
54:30  
 
 Magnetic Force 
56:20  
 
 Magnitude of Force 
56:45  
 
Extra Example 1: Vectors 
19:24  
 
Extra Example 2: Proton in Magnetic Field 
8:33  
 
Extra Example 3: Proton Circular Path 
10:46  

Magnetic Force on a Current Carrying Conductor 
1:04:43 
 
Intro 
0:00  
 
Current Carrying Conductor in a Magnetic Field 
0:19  
 
 Current Though the Wire Connected to Battery 
1:22  
 
 Current Exerts Force Toward the Left 
2:16  
 
 IF Current is Reversed ,Force Exerts on Right 
2:47  
 
Magnetic Force 
3:31  
 
 Wire with Current 'I' and with magnetic Field 
4:02  
 
 Force Exerted by Magnetic field 
5:05  
 
 Applying right hand Rule 
5:25  
 
 Let N be Number of Charge Carries Per /Vol 
6:40  
 
 Force on Wire 
8:30  
 
 Number of Charge Crossing in Time 't' 
12:51  
 
Example 
22:32  
 
 Wire Bent to Semi Circle and Rest is Straight 
22:51  
 
 Applying Constant Magnetic Field in 'y' Direction 
23:24  
 
 Force n Straight Segment 
23:50  
 
 Net Force 
34:19  
 
Example 1: Rod on Rails 
15:37  
 
Example 2: Magnetic Force on Wire 
13:59  

Torque on a Current Carrying Loop 
1:09:06 
 
Intro 
0:00  
 
BField Parallel to Plane of the Loop 
0:27  
 
 Loop in the XY Plane 
1:06  
 
 Net Force on Loop 
7:45  
 
BField Not Parallel to Plane of the Loop 
15:16  
 
 Loop in the XY Plane, Free to Rotate in X Direction 
15:32  
 
 Force on Out of Page and Force in to the Page 
15:59  
 
 Loop Turns Through 90 Degrees 
18:10  
 
Magnetic Moment 
36:26  
 
 Any Current Loop Has Current 'I' 
36:51  
 
 Electric Dipole in Electric Field 
38:17  
 
 Potential Energy 
39:54  
 
 Magnetic Potential Energy of Dipole 
41:05  
 
Example 
43:33  
 
 Circular of Radius 'r' With Magnetic Field and Pass Current 
43:42  
 
 Torque 
46:01  
 
Example 1: Loop in Magnetic Field 
9:21  
 
Example 2: Rotating Charge 
10:32  

Magnetic Field Produced By Current, Part 1 
57:58 
 
Intro 
0:00  
 
BiotSavart Law 
0:11  
 
 Suppose A current Carrying Wire 
0:50  
 
 Magnetic Field Produced by the Tiny Element is Also Tiny 
3:09  
 
 Permeability of Free Space 
4:56  
 
BField of a Straight Wire 
8:40  
 
 Wire in X Axis 
9:05  
 
 What is the Magnetic Field Produce at Point p 
9:16  
 
 Taking a Small Segment 
9:57  
 
 If Length is Infinite 
26:26  
 
Semi Circular Wire 
27:02  
 
 Semicircular Wire of Radius 'R' 
27:22  
 
 Finding Magnetic Field at Center 
27:48  
 
Circular Current in Loop 
33:37  
 
 Circular Loop with Current 'I' 
33:47  
 
 Current Above the Center 
34:00  
 
Example 1: Loop Carrying Current 
10:42  
 
Example 2: Concentric Loops 
4:57  

Magnetic Field Produced By Current, Part 2 
1:19:29 
 
Intro 
0:00  
 
Ampere's Law 
0:16  
 
 Consider a Loop at Any Point in Loop 
1:15  
 
Long Cylindrical Wire 
9:08  
 
 Wire of Radius 'r' 
9:24  
 
 Magnetic Field is Tangent to Circle and Has Same Magnitude 
10:15  
 
 B at r>R 
21:58  
 
 B at r<R 
23:08  
 
 B at r=R 
25:49  
 
Toroid 
26:58  
 
 Wrap a Wire to Toroid 
27:47  
 
 Calculating the Magnetic Field for 1 Loop 
29:30  
 
Solenoid 
39:17  
 
 Coil With Many Turns 
39:35  
 
 Each Loop Carrying Current 
40:29  
 
 Taking Loop Within the Solenoid and Close the Loop 
43:05  
 
 Applying Ampere's Law 
43:33  
 
Example 1: Infinitely Long Wire 
8:12  
 
Example 2: Straight Wire 
4:15  
 
Example 3: Two Parallel Conductors 
8:21  
 
Example 4: Solenoid 
10:13  

Magnetic Field Produced By Current, Part 3 
50:37 
 
Intro 
0:00  
 
Magnetic Force Between Parallel Conductors 
0:16  
 
 Two Parallel Plate Capacitors with Current 
0:40  
 
 Magnetic Field by i1 
1:50  
 
 According to Right Hand Rule 
2:37  
 
Example 
10:20  
 
 Wire of 4m Length 
10:50  
 
 Mass of Wire 1Kg 
11:18  
 
 Force of Repulsion =Mg 
12:24  
 
Gauss's Law in Magnetism 
15:36  
 
 Surface of Area, Magnetic Field is Perpendicular to Surface 
17:09  
 
 Magnetic Flux Through Enclosed surface 
19:23  
 
Example 
26:44  
 
 Magnetic Field Out of Page 
27:54  
 
 Consider a Flux Through Rectangular Loop 
28:52  
 
Example 1: Two Parallel Wires 
9:45  
 
Example 2: Cube with Magnetic Field 
5:36  

Faraday's Law 
1:10:38 
 
Intro 
0:00  
 
Faraday's Law 
0:14  
 
 Coil Connected to Ammeter 
0:29  
 
 Introducing a Magnet 
1:08  
 
 Moving the Magnet Forward and Backward 
1:33  
 
 Flux Increasing in Time 
2:20  
 
 Induced Electro Motive Force EMF 
4:20  
 
 Iron Core Square with Battery and Switch, Ammeter 
5:22  
 
 Close the Switch, Current Appears 
6:11  
 
Lenz's Law 
9:17  
 
 Wire with Current I and Wire Loop 
9:30  
 
 Magnetic Field is Into the Page 
10:14  
 
 Current Induced in Wire to Oppose Change in Flux 
12:54  
 
 Example: Two Wires with Resistance and Uniform Magnetic Field 
16:00  
 
Increasing B 
29:02  
 
 Coil of 100 Turns 
29:20  
 
 B Perpendicular to Coil 
30:47  
 
 Flux Through Each Turn 
32:25  
 
Rotating Coil 
37:36  
 
 Consider a Big Magnet and Rectangular Coil with many Turns 
37:49  
 
 Rotating Coil With Angular Velocity 'w' 
41:49  
 
Example 1: Loop 
9:51  
 
Example 2: Solenoid 
6:57  
 
Example 3: Wrapped Square 
7:16  

Motional EMF 
1:00:17 
 
Intro 
0:00  
 
Moving a Conducting Rod in Magnetic Field 
0:24  
 
 Rod Moving in a Plane with Velocity 'v' 
0:49  
 
 Charges Piles Up and Down Until Electric Force Balance 'B' 
7:59  
 
 Equilibrium 
9:30  
 
 Potential Difference, Distance to Length of Wire 
9:59  
 
Rod Pulled By External Agent 
11:30  
 
 Resistance to Wire 
12:01  
 
 Introducing Uniform Magnetic Field into The page 
12:14  
 
 Finding Flux 
14:45  
 
 Power Delivered to Resistance 
17:01  
 
 Force Exerted by 'B' on Rod 
19:10  
 
 Power By Agent 
22:26  
 
Sliding Rod 
23:08  
 
 Resistance with a Sliding Rod and Magnetic Field 'B' 
23:35  
 
 Push With Initial Velocity 'V0' 
24:01  
 
 Finding Current = I 
25:20  
 
Rotating Rod 
36:10  
 
 Magnetic Field into The Page 
36:19  
 
 Rod fixed in Plane and Rotating 
36:40  
 
 Induced EMF in Segment 
40:00  
 
Example 1: Bar in Magnetic Field 
6:15  
 
Example 2: Rod in Magnetic Field 
11:08  

Induced Electric Field 
1:05:19 
 
Intro 
0:00  
 
Change B to Induce E 
0:54  
 
 Loop with Magnetic Field B 
1:10  
 
 Flux is Positive With Choice of 'n' 
2:45  
 
 Suppose Magnetic Field is Changing 
3:04  
 
 B Changing with time Flux (>0) 
3:24  
 
 Change in Electric Field Induces magnetic Field 
20:34  
 
Example 
21:08  
 
 Cylinder with Magnetic Field 
21:20  
 
 Fill With Radius 'r' 
22:11  
 
 Turn Off the Field 
22:30  
 
 Magnetic Flux Through Big Loop 
29:59  
 
AC Generator 
38:28  
 
 Magnetic Field with Coil of Many Turns 
38:50  
 
 As the Coil Rotates Flux is Induced 
39:18  
 
 Coil Rotated by Angle 
40:29  
 
 Coil Connected to The Ring and End Connected to Lamp 
42:12  
 
 Kinetic Energy Strike the Coil and Rotating Coil will Produce Electric Energy 
45:12  
 
Example 1: Electric Field 
12:09  
 
Example 2: Electric Field 
7:00  

Inductance 
1:11:10 
 
Intro 
0:00  
 
Mutual Inductance 
0:10  
 
 Two Coils 
0:35  
 
 Current is Time Dependent 
0:54  
 
 Flux Proportional 
1:55  
 
 Magnetic Flux in Coil 2 
2:08  
 
 Induced EMF 
2:40  
 
 Flux Through 2nd Coil Proportional to Current in First Coil 
4:07  
 
 Mutual Inductance 
5:30  
 
 Suppose Current is in 2nd Coil 
9:28  
 
Example 
12:15  
 
 Two Coils M=0.001 
12:26  
 
 Φ= Mi1 
14:17  
 
 Induced EMF 
15:44  
 
Example 
18:30  
 
 Solenoid with N turns 
18:40  
 
 B inside Solenoid 
21:05  
 
 Φ Through the Ring 
22:14  
 
Self Inductance 
27:50  
 
 Single Coil with Current 
28:33  
 
 I with Time Dependent 
28:54  
 
 Φ Proportional to B , Proportional to I 
30:00  
 
 Induced EMF =di/dt 
31:27  
 
Example 1: Circular Wire 
15:46  
 
Example 2: Two Coils 
9:54  
 
Example 3: Coil 
7:24  

RL Circuits 
1:25:19 
 
Intro 
0:00  
 
Current Raising 
0:45  
 
 Battery and Switch with Resistance and Inductance 
1:17  
 
 Close s1 at T=0 
2:27  
 
 With out Inductor , Current is E/R 
4:03  
 
 I at T=0 
9:51  
 
 VbVa= Ir 
15:05  
 
 Log (ie/r) 
19:51  
 
Current Declining 
27:16  
 
 Resistance R and Inductance 
27:37  
 
 I= E/R 
28:37  
 
 Switch is On at T=0 
29:10  
 
Example 
39:46  
 
 Battery and Resistance R Connected with Inductor 
39:55  
 
 Time Constant l/R 
40:58  
 
 Time to Reach Half Time 
41:59  
 
 per τ (11/e) 
44:36  
 
Magnetic Energy 
45:47  
 
 EIRLdi/dt 
46:26  
 
 Power Derived By Current 
46:51  
 
 Magnetic Energy Stored in Conductor 
52:48  
 
 U=Li2 
55:28  
 
Magnetic Energy Density 
57:49  
 
 Solenoid 
58:18  
 
 U=1/2 Li2 
59:03  
 
 Energy Density 
60:45  
 
Example 1: Circuit 1 
6:13  
 
Example 2: Circuit 2 
16:54  

Circuit Oscillation 
1:22:26 
 
Intro 
0:00  
 
Oscillation in LC Circuit: Qualitative Analysis 
0:30  
 
 Circuit with Capacitance and Inductance 
1:27  
 
Comparison with a Spring Block System 
4:57  
 
 Close the Switch, Let the Block Move 
5:51  
 
 At V=0 
7:06  
 
LC Circuit Oscillation :Quantitative Analysis 
15:07  
 
 U Total = Ue + U m 
17:26  
 
Example RLC 
29:25  
 
 Battery =12V, Capacitor and Inductor 
29:54  
 
 Switch at B F> t 
31:42  
 
 Damped Oscillation 
50:14  
 
Example 1: LC Circuit 1 
7:34  
 
Example 2: LC Circuit 2 
16:19  
 
Example 3: RLC Circuit 
6:52  

Maxwell's Equations 
1:12:35 
 
Intro 
0:00  
 
Displacement Current 
1:29  
 
 Ampere's Law 
3:04  
 
 Surface Bounded by Path 
3:48  
 
 I Current Going Through Surface 
4:53  
 
 Charging a Capacitor 
9:55  
 
Maxwell's Equation 
18:26  
 
 Integral Form 
18:53  
 
 E.da =Q/e0 in Closed Surface 
18:55  
 
 Absence of Magnetic Monopoles 
19:55  
 
 Flux Through the Surface Bounded By C 
22:26  
 
 Ampere's Law 
23:01  
 
Plane Electromagnetic Wave 
31:03  
 
 Electric and Magnetic Field 
31:27  
 
Example 
39:20  
 
 Electromagnetic Wave Traveling in X Direction 
39:40  
 
 Lamda=c/f 
41:30  
 
 B=E/C 
43:49  
 
Energy and Momentum Carried by EM Waves 
44:34  
 
 Energy Density 
46:35  
 
 Area in YZ Plane , Wave in X Direction 
48:53  
 
 Energy Crossing Per Unit Area 
52:53  
 
 Pointing Vector 
53:11  
 
 Reflection of Radioactive 
60:26  
 
Example 1: Cylindrical Region 
8:36  
 
Example 2: Electric Field of EM Wave 
3:16  