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.

Two unlike magnetic poles of unequal strengths are 10 cm apart in air. They attract each other with a force of 64 dynes. Calculate the pole strengths of the poles if one pole is 4 times stronger than the other.

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.

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

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 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.