« · »

Physlets run in a Java-enabled browser on the latest Windows & Mac operating systems.
If Physlets do not run, click here for help on updating Java and setting Java security.

Problem 22.4: Two hidden charges

Please wait for the animation to completely load.

A positive charge (red) is shown along with a region blocked by a gray curtain (position is given in meters). The electric force on the positive charge is represented with a force vector. The region behind the gray curtain contains two charges of equal magnitude but unknown polarity (unknown sign). You can drag the red charge along the black circle. Restart.

Draw a picture showing the sign and location of each charge within the covered area.

Problem authored by Melissa Dancy.

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics