© 2010. HPP Activity by The Humanized Physics Project is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Permissions beyond the scope of this license may be available by contacting Chris Wentworth at chris.wentworth@doane.edu . Supported in part by National Science Foundation's Course, Curriculum and Laboratory Improvement Program under grants DUE #00-88712 and DUE #00-88780.


Magnetic Torque


Prerequisites

  • magnetic force on current-carrying wire

Objectives

  • predict direction of magnetic torque on current loop
  • calculate magnitude of torque
  • describe how an electric motor works

Environment

Lab or workshop.

Time

~1.5 hours

Materials

  • Rectangular wire coil
  • Suspension device
  • Battery pack
  • 3 alligator clip wires
  • switch
  • U-shaped manet

Student Guide

MS Word   PDF

Homework

none

Notes

This activity was inspired by one in the Dickinson College Workshop Physics curriculum.

Authors

  • Mark Plano Clark, Doane College
  • Chris Wentworth, Doane College

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