Two charged particles repel each other with a force F.If the charge of one particle is doubled and the distance between them is doubled,the force will be
A)F.
B)2 F.
C)F/2.
D)F/4.
E)none of the above

Question

Quizplus · Accepted Answer

According to Coulomb's law, the force between two charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. Doubling one charge doubles the force, but doubling the distance reduces the force by a factor of four. Thus, the new force is (2 * F) / 4 = F/2.

Two Charged Particles Repel Each Other with a Force F