A magnetic field exerts a force on a wire carrying current. If the wire is straight, the force is given by F = I L x B, where I is the current, L is a vector whose magnitude is the length of
the wire, and whose direction is that of the current, and B is the magnetic field vector.
A magnetic field also exerts a torque, on a current loop, given by I A B sin(theta), where I is the current in the loop, A is the loop area, B is the magnitude of the magnetic field, and
theta is the angle between the magnetic field vector and the normal (perpendicular) to the plane of the loop.
Force on a Current in a Magnetic Field
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.