Question

If the charge of a particle doubles, what happens to the force acting on it?

Answer 1

Explanation:

(1) The force that exists between charged particles is electrostatic force. It is given by :

$F=k\dfrac{q_1q_2}{r^2}$

Where

q₁ and q₂ are charges

r is distance between charges

If the charge of a particle doubles, the electric force doubles. So, the correct option is (a) "It doubles".

(2) A charge exerts a negative force on another charge. Negative force denotes the force is attractive. It means that the charges are of opposite sign. So, the correct option is (c) "the charges are of opposite signs".