A new kind of circuit (an inductor-capacitor or LC circuit), as you might expect, involves a closed circuit that has a capacitor and an inductor. As we mentioned in the previous video, an inductor is like an anti-capacitor when it comes to its influence on the current of a circuit. So, how do you expect combining something like this and a capacitor will influence the current? Think about how simple harmonic oscillators operate going from a high to a low amplitude; this is what happens to the current as time progresses. By keeping in mind how an oscillatory graph looks, you can probably imagine how the potential and current graphs of the circuit would look as time went on (in a 100% efficient circuit, at least).
To analyze an LC circuit, use Faraday’s Law. You cannot correctly use Kirchhoff’s Voltage Law (the loop rule) since the magnetic flux in the circuit is changing.
LC circuits lead to oscillating voltage and current curves, and are often referred to as resonant circuits.
The resonant frequency of an LC circuit is equal to 1/Sqrt(LC) in radians per second. The frequency in Hertz is found by dividing the resonant frequency by 2*Pi.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Physics C concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes 2 full length practice exams modeled on the real test, 3 separate plans to fit your study stle, review material updated to the most recent tests, and all the terms and concepts you need to know.