Calculate the amount of energy dissipated when a charge of 200C is transferred from cloud to the ground during lighting, if potential of the cloud is `10^6V` with respect to earth.

Calculate the work done in moving a charge of 2 C through a potential difference of 10 V.

Calculate the energy stored in a capacitor of 6muF when it is charged to a potential of 240 volt.

Derive an expression for the electric intensity due to an electric dipole at a point on the axis of dipole. When a point charge of 5 xx 10^-9 C is taken from point A to point B, the work done is 10^-6 J. Find the potential difference between points A and points B.

Calculate the energy radiated by the electron in the hydrogen atom during its transition from the fourth Bohr orbit to the first Bohr orbit. Hence determine frequency, wavelength and wave number of corresponding spectral line. Given: E_1= -13.6 eV, h = 6.6 xx 10^-34 J-s, c = 3 xx10^8 m//s . . .

When 10^8 electrons are transferred from one conductor to another, a potential difference of 10V appears between the conductors. Find the capacitance of the two conductors.

A ball orf mass 100 g dropped on the ground from 5 m bounces repeatedly. During every bounce 64% of the potential energy is converted into kinetic energy. Calculate the following: (a) Coefficient of restitution (b) Speed with which the ball comes up from the ground after third bounce. (c) Impulse given by the ball to the ground during this bounce. (d) Average force exerted by the ground if the impact lasts for 250ms.​

The kinetic energy of a charged particle decreases by 10J as it moves from a point at a potential 300V to a point at a potential 400V. Find the charge on the particle.