GENERAL KNOWLEDGE

Detailed explanation-1: -There are two types of charges, positive and negative. Same type of charges (two positive or two negative) repel each other, while unlike charges (one positive and one negative) attract each other.

Detailed explanation-2: -Therefore, like charges repel and unlike charges attract.

Detailed explanation-3: -In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object. This repulsive force will push the two objects apart.

Detailed explanation-4: -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.