Question

Is the force acting between two point charges q1 and q2 kept at some distance apart in air attractive or air repulsive when(i)q1q2>0 (ii)q1q2<0?

Answer 1

Answer:

Ans1- repulsive

Ans2- attractive

Explanation:

Because multiplecatio of any two digit results positive only when they are of same sign

And in 2 product of two charges is smaller than zero it is only possible when they are of opposite sign