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 .

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)