Question

How will you show that like charges repel and unlike charges attract each other?

Answer 1

Experiment:

• Take a glass rod rubbed with silk piece (+vely charged). Suspend it in a stand with the help of a thread. Bring a negatively charged Ebonite rod (rubbed with fur) near the glass rod. Attraction is seen between the two rods. Now interchange them i.e. suspend B and bring A near it, again attraction is there. This show that unlike charges attract each other.

• Now take two glass rods (positively charged) and bring them near each other, repulsion takes place. Similarly, if we take two negatively charged ebonite rods and suspend one of them and bring the second rod near it again the suspended rod moves away showing repulsion between like charges.