Question

To check whether a body is charged or not, which of the following will you use? a) a positively charged body b) a negatively charged body c) an uncharged body d) none

Answer 1

You can use the principle of Gold Leaf Electroscope.

Explanation:

In an Electroscope when you will bring a negatively charged body near the brass ball, the gold leaf will diverge due to repelling of electrons in the gold leaf. Now since the gold leaf is negatively charged, if you will bring a positively charged rod near the brass ball the leaves will converge back. Or if negatively charged rod is brought near it the leaves would diverge even more.

Hope this might help.
- DHRUV THE GREAT