Question

When the cap of a positively charged gold leaf electroscope is brought in contact with a charged rod, the leaves of gold leaf electroscope collapse. What can be concluded about the charge on the rod?

• A. positive
• B. negative
• C. zero
• D. information is not sufficient

Answer 1

The correct option is B

negative

Correct option is B: negative

Explanation:

1. As it is given that the cap of the gold leaf electroscope is positively charged and it is collapsed after touching a rod. The leaves of the gold leaf electroscope collapse because the charge on the leaves decreases.
2. When the cap is touched with the rod charge on the leave is neutralized and it is only possible if the rod is charged with the opposite charge.
3. So we can say that the rod is charged with a negative charge.

Hence the correct option is (B) Negative