Question

Which of the following changes would double the force between two charged particles?

A. Doubling the amount of charge on each particle
B. Increasing the distance between the particles by a factor of 2
C. Decreasing the distance between the particles by a factor of 2
D. Doubling the amount of charge on one of the particles

Answer 1

Doubling the amount of charge on one of the particles.

Step-by-step explanation:

The force between two charges is given by :

`F=(kq_1q_2)/(r^2)`

Where

r is the distance between charges

or

`F\propto (1)/(r^2)`

On doubling the charge on one of the particle,

F' = 2F

So, the force gets doubled. Hence, the correct option is (d).