Question

Select the correct answer.

Answer 1

If charges on A and B be q1 and q2 respectively

The general formula is

$\sf F_e=\dfrac{kq_1q_2}{r^2}$

So

• Isolate q1

$\\ \rm\hookrightarrow q_1=\dfrac{F_e r^2}{kq_2}$

$\\ \rm\hookrightarrow q_1\propto F_e r^2$

$\\ \rm\hookrightarrow q_1\propto \dfrac{1}{q_2}$

If q_1 increases charge on B decreases but electric force increases