Two charges q1 and q2 exert a force of 20 N on each other. If the charge of q1 is doubled, what will the new force be? 1) 40N 2) 80N 3) 20 N 4) 10 N

Given :

Two charges q1 and q2 exert a force of 20 N on each other.

To Find :

If the charge of q1 is doubled, what will the new force be?

1) 40 N 2) 80 N 3) 20 N 4) 10 N

Solution :

We know, electrostatic force between two charges is given by :

Here, F = 20 N.

Now, if is doubled :

Therefore, if the charge of q1 is doubled, new force will be 40 N.

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