Gold leaf electroscope

A beam of ultraviolet light is incident on the metal ball of an electroscope that is initially uncharged. Does the electroscope acquire a charge?

A variable parallel plate capacitor and an electroscope are connected in parallel to a battery. The reading of the electroscope would be decreased by.

How can we identify the presence and nature of charge on a body with the help of an electroscope ?

In an electroscope if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of prositive charge is brought in contact with the clip, what will happen?

An electroscope is given a positive charge, causing its foil leaves to separate. When an object is brought near the top plate of electroscope, the foils separate even further. We conclude