To move a particle with charge q in an electric field, from point A to point B, an external agent needs to do work; the amount of work done is equal to Ub Ua, where Ub is the electric
potential energy at A, and Ub is the electric potential energy at B.
In a uniform electric field, the potential difference between 2 points separated by a vector d is the dot product E.d; if you move along the field lines, the potential drops.
The electric potential of a point charge Q at a distance r is V = kQ/r.
A surface perpendicular to the electric field lines is an equipotential surface.
The potential energy of a system of 2 point charges Q and Q separated by a distance r, is U = kQQ/r.
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.
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 full length practice exams modeled on the real test and all the terms and concepts you need to know.
This book includes a review of all the topics tested including vectors, kinematics, fluid mechanics, optics and nuclear physics. Additionally, the book includes two full length tests made complete with descriptive solutions, and quick study tables for Physics B formulas and equations.