An electroscope consists of a conducting sphere, conducting pole, and two metal foils (Fig. 16.6). The electroscope is initially uncharged.

(a) A positively charged rod is allowed to touch the conducting sphere and then is removed. What happens to the foils and what is their charge?
(b) Next, another positively charged rod is brought near to the conducting sphere without touching it. What happens?
(c) The positively charged rod is removed and a negatively charged rod is brought near the sphere. What happens?

Transcribed Image Text:

Conducting bulb and pole Gold foil leaves Insulating base