Homework Help: physics

Posted by fatih on Friday, March 9, 2012 at 7:35am.

true or false

a small plastic ball has an excess negative charge on it. if a magnet is placed close to this ball, it will either attract or repel the ball, depending upon which pole is closer to the ball.

physics - drwls, Friday, March 9, 2012 at 8:32am
False. Excess charge generates an E (electric)field around the ball, but a B (magnetic) field is required to interact with a magnet. B fields are generated by currents or magnetic dipoles.

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