Enter your Sign-on user name and password.

Forgot password?
  • Follow us on:
Loading video...

Start Learning Now

Our free lessons will get you started (Flash® 10 required).
Get immediate access to our entire library.

Sign up for Educator.com

Features Overview

  • Get on-demand access to our complete library
  • Search and jump to exactly what you need to learn
  • Track your progress
  • Download practice and lesson files
  • *Ask questions and get answers from our community & instructors

Magnetic Force on a Current Carrying Conductor

  • A magnetic field exerts a force on a conductor carrying a current. If the wire is straight, and the field is uniform, 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 conductor and whose direction is the same as the direction of the current, and B is the magnetic field vector.
  • If the shape of the wire is arbitrary, the force on a segment ds of the wire is dF = I ds x B. The total force on the wire is obtained by integrating dF over the length of the wire.

Magnetic Force on a Current Carrying Conductor

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.

AP Physics C: Electricity and Magnetism