Question

Two point charges q1 and q2 are placed close to each other. What is the nature of the force between them
when: (i) q1q2 < 0 and (ii) q1q2 >0?

Answer 1

Answer:

(i) when q1q2<0

this means that q1 and q2 are opposite charges

as we know opposite charges attract

so there must be an attractive force between them

(ii)similarly ,if q1q2>0 then both of them are similar charges

so there is an repulsive force