Two equal point charges ar placed in air 10 cm aprat and the force of interaction between them is 50 mg - wt . Determine the magnitude of the charges.

The ratio of two charges is 2:3 and their distance of separation is 5 cm. If the force of attraction between them is 96 dyn, determine the magnitude the magnitude of the charges .

State Coulomb's law regarding the force of interaction between two point charge. Define the unit of charge from this law.

Two point charges +q and -q are placed d distance apart. What is the zero potential plane for them?

Two charges q_1 and q_2 are placed in vacuum at a distance d and the force acting between them is F. If a medium of dielectric constant 4 is introduced around them, the force now will be

Two point charges q_1 and q_2 are such that q_1q_2 lt 0 . What is the nature of the force acting between the two charges?

The force of interaction between two charges placed in vacuum is F . What will be the force be the force between the charges placed at the same distance in a medium of dielectric constant K ?

The distance between the centres of two spheres of masses 50 kg and 10 kg is 30 cm. The mutual force of attraction between them is equal to the weight of a body of mass 1/(28) mg. Determine the value of the gravitational constant.

Two point charges seperated by a distance d repel each other with a force of 9N. If the seperation between them becomes 3d, the force of repulsion will be