Question

1) Detect the presence of charge, given an uncharged electroscope.
2) Find the nature of charge, using a given negatively charged electroscope.
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Answer 1

Answer:

1. Modern electroscopes usually use balls made of plastic. In order to test the presence of a charge on an object, the object is brought near to the uncharged pith ball. If the object is charged, the ball will be attracted to it and move toward it.