Question

why do we say that crarge are produced in pair​

Answer 1

Answer:

It is important to maintain equilibrium in nature. Therefore, we can't just have positive charges or just negative charges.Both should be present simultaneously to nullify/neutralise each other.

The net charge should always be neutral and for that if positive charges are produced in nature, then negative charges also have to be produced.Thus, it can be said that charges are always produced in pairs.