Electrostatics ...

There are two equipotential surfaces as shown in figure. The distance between them is r. The charge of –q coulomb is taken from the surface A to B, the resultant work done will be

When one electron is taken towards the other electron, then the electric potential energy of the system

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10y. The potential at a distance of 2cm from the centre of the sphere

The work done in carrying a charge of 5µC from a point A to a point B in an electric field is 110 mJ. The potential difference (V_B – V_A) is then

Value of potential at a point due to a point charge is

Electric potential of earth is taken to be zero because earth is a good

Two parallel plates separated by a distance of 5 mm are kept at a potential difference of 50 V A particle of mass 10^–15 kg and charge 10^–11C enters in it with a velocity 10⁷ m/s. The acceleration the particle will be

Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting

If an insulated non-conducting sphere of radius R has charge density ρ. The electric field at a distance r from the centre of sphere (r < R) will be

Two plates are at potentials –10 V and +30 V. If the separation between the plates be 2 cm. The electric field between them is