Pre-class Exercise #2

One fixed charge and one "test" charge are shown in each animation.  Assume that the "test" charge in all 3 animations has enough charge to measure the electric force.  In which animation is the "test" charge a true test charge?  You can click-drag on the "test" charge to change its position. 


  Your Name:

  Your Answer:

A.  All "test" charges are OK.

B. Animation 3.

C. Animation 2.

D. Animation 1.


This Physlet was created by Mario Belloni and Wolfgang Christian.