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

Question

Quizplus · Accepted Answer

According to Coulomb's law, F is inversely proportional to the square of the distance between the particles and directly proportional to the product of their charges. If the charge of one particle is doubled, the force will double (2F). If the distance between them is doubled, the force will decrease by a factor of 4 (1/2^2 = 1/4). Therefore, the new force will be F/2.

Two Charged Particles Repel Each Other with a Force F