How will the electrostatic force between two electric charges change if the first charge is doubled and the second charge is only one third of the original charge? A) 4/9
B) 2/3
C) 6 times
D) 2/9

B)

Explanation:

The electric force between charges can be determined by;

F =

Where: F is the force, k is the Coulomb's constant, is the value of the first charge, is the value of the second charge, r is the distance between the centers of the charges.

Let the original charge be represented by q, so that;

= 2q

=

So that,

F = x

  = 2q x x

  = x

  = x

F = x

The electric force between the given charges would change by .