Mastering Physics: Video Tutor: Electroscope in Conducting Shell

Mastering Physics: Video Tutor: Electroscope in Conducting Shell

Part A

Question: As in the video, we apply a charge +Q to the half-shell that carries the electroscope. This time, we also apply a charge –Q to the other half-shell. When we bring the two halves together, we observe that the electroscope discharges, just as in the video. What does the electroscope needle do when you separate the two half-shells again?

Answer: It does not deflect at all.