Electrostatics ...

Number of electrons in one coulomb of charge will be

When air is replaced by a dielectric medium of constant k, the maximum force of attraction between two charges separated by a distance

A glass rod rubbed with silk is used to charge a gold leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to X-rays for a short period. Then

The force between two charges 0.06m apart is 5N. If each charge is moved towards the other by 0.01m, then the force between them will become

Two charged spheres separated at a distance d exert a force F on each other. If they are immersed in a liquid of dielectric constant 2, then what is the force (if all conditions are same)

When 10¹⁹ electrons are removed from a neutral metal plate, the electric charge on it is

Electric charges of 1µC,–1 µC and 2µC are placed in air at the corners A, B and C respectively of an equilateral triangle ABC having length each side 10 cm. The resultant force on the charge at C is

Charge on α–particle is

Two charges are at a distance `d\' apart. If a copper plate (conducting medium) of thickness d/2 is placed between them, the effective force will be

Two electrons are separated by a distance of 1Å. What is the coulomb force between them