Two equal charges repel each other with a force of 0.4 newton when situated 10 cm apart in air. Find the magnitude of the charge.

Two equal charges repel each other with a force of 0.4 newton when situated 10 cm apart in air. Find the magnitude of the force when the charges are in a medium of relative permittivity 4.0

Two small spheres each carrying charge (+q) coulomb are kept r meter apart and are found to repel each other with a force of F newton. One of the sphere is moved around the other in a circular path of radius, r. The work done in Joules is

If two equal and similar charges 0.03 m apart in air, repel each other with a force of 4.5 kg-f, then determine the charge in coulomb.

An infinite number of identically charged bodies are kept along the X-axis at points x = 0,1 m, 2 m, 4 m, 8 m, 16 m and so on. All other charges repel the charge at the origin with a force of 1.2 N. Find magnitude of each charge

Two similarly equally charged identical metal spheres A and B repel each other with a force of 2 xx 10 ^(-5)N. A third identical uncharged sphere is touched to A then placed between the mid-point between A and B. Calculate the net electrostatic force on C.

Assuming that the charges q_(1) and q_(2) are placed 3m away from each other. The-sum of two charges is 20µC and they repel each other with a force of 0.075N. Determine the two charges.

Two poles one of which is 5 times are strong as the other are 25 cm apart in air. They repel each other with a force of 500 dynes. Find the strength of each pole.