Question

A plastic rod becomes negatively charged when it is rubbed with a piece of wool. How does the rod become charged?

Answer 1

Answer:

Charging the plastic rod negative by rubbing it with the wool exciter leaves a net positive charge on the wool, so that if you place the rod on a swivel stand, you can then bring the wool exciter close to it and pull it around on the swivel stand.

Explanation:

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