That is, the negative charge in the rod repels the electrons in the ball, causing them to travel down to the leaves. The leaves will separate while the rod is nearby. ... If the leaves are permanently charged and the rod removed, the electroscope can then be used to determine the type of unknown charge on an object.
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Answer:
That is, the negative charge in the rod repels the electrons in the ball, causing them to travel down to the leaves. The leaves will separate while the rod is nearby. ... If the leaves are permanently charged and the rod removed, the electroscope can then be used to determine the type of unknown charge on an object.