Question

what is the work of electroscope?

Answer 1

It is an instrument used to detec the presence and magnitude of the electric charge or attract depending on the charge of the body which is brought near it . If the body is negatively charged then the electrons from the top of electroscope are pushed downward and the two leaf repel away from each other.

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Answer 2

An electroscope is an early scientific instrument used to detect the presence of electric charge on a body. ... The electroscope was the first electrical measuring instrument. The first electroscope was a pivoted needle (called the versorium), invented by British physician William Gilbert around 1600.