Questions in electrostatics

Select	Question
	A particle has a mass 400 times than that of the electron and charge is double than that of a electron. It is accelerated by 5V of potential difference. Initially the particle was at rest, then its final kinetic energy will be
	An electron (charge = $1.6 \times {10^{ - 19}}$ coulomb) is accelerated through a potential of 1,00,000 volts. The energy required by the electron is
	The charge given to a hollow sphere of radius 10 cm is $3.2 \times 10^{–19}$ coulomb. At a distance of 4 cm from its centre, the electric potential will be
	Work done in moving a positive charge on an equipotential surface is
	A charge of 10 e.s.u. is placed at a distance of 2 cm from a charge of 40 e.s.u. and 4 cm from another charge of 20 e.s.u. The potential energy of the charge 10 e.s.u. is (in ergs)
	A table tennis ball which has been covered with conducting paint is suspended by a silk thread so that it hang between two plates, out of which one is earthed and other is connected to a high voltage generator. This ball
	A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is
	State which of the following is correct
	When a positive q charge is taken from lower potential to a higher potential point, then its potential energy will
	When a negative charge is taken at a height from earth's surface, then its potential energy