Question

How can we neutralize a charged electroscope?

Answer 1

This can be done by touching the electroscope with hand. Suppose we take a positively charged electroscope. When it is touched, its charge becomes grounded (or neutralized). The grounding process involves a transfer of electrons between the charged electroscope and the conducting object to which it is touched (here ground). When a positively charged electroscope is touched, electrons enter the electroscope from the ground. The negatively charged electrons enter the electroscope and neutralize the positive charge. Similarly, a negatively charged electroscope can also be neutralized.