Question

When a charged rod is brought near the disc of a negatively charged gold leaf electroscope, it is observed that the divergence of leaves decreases. What inference do you draw about the charge on the rod ?

• A. Rod is positively charged
• B. Rod is negatively charged
• C. Rod has no charge
• D. cant say

Answer 1

The correct option is A Rod is positively charged

When the positively charged rod is brought near the disc of a negatively charged gold leaf electroscope, the divergence between the gold leaves decreases as unlike charges attract each other.
In this case, the divergence decreases when a rod is brought near the disc of negatively charged electroscope. So, the rod must be positively charged.