Two charges placed in air repel each other by a force of `10^(-4)N`. When oil is introduced between the charges, then the force becomes `2.5 xx 10^(-5)N`
The dielectric constant of oil is

Two charges 4 cm apart repel each other with a force of 2xx10^(-2) N in air. When a dielectric slab of thickness 1 cm is placed between them, The force is reduced to 1.5xx10^(-2) N. Calculate the permittivity of the dielectric.

Two small charged sphers repel each other with a force of 2 xx 10^(-3)N . When taken 10 cm farther a part , the force 5 xx 10^(-4)N . What are the charges and what was their original distance ?

Two similar and equal charges repel each other with force of 1.6 N. When placed 3m apart Strength of each charge is -

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

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

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

Two point charges +10 muC and +20 muC repel each other with a force of 100N. If a charge of-2 muC is added to each charge, then force between them will become

Two point charges +10 muC and +20 muC repel each other with a force of 100N. If a charge of-2 muC is added to each charge, then force between them will become