For earthing an electric appliance, one has to remove the paint from the metallic body of the appliance where the electric contact is made. Explain the reason.

when an earthed electric appliance gets shor circuited, then the current from its metal body flows into the

Which part of an electrical appliance is earthed?

The earthing of an electric appliance is useful only if the fuse is in the live wire. Give the reason.

An electrical appliance has a rating 100 W, 120 V. The resistance of element of appliance when in use is :

Assertion: In parallel combination of electrical appliances, total power consum ption is equal to the sum of the powers of the indivisual appliances. Reason : Electrons move away from a region of lower potential to a region of higher potential.

To which wire is the metallic case of an electric appliance connected ? Give the reason.

What do you mean by earthing of an electric appliance ?

A point charge .q. is placed at the centre of an uncharged conducting shell of inner radius R and outer radius 2R. If the point charge is removed from the centre of the shell, to infinity (without any electric contact with the shell). Work done by electric force is

If 20 J of work has to be done to move an electric charge of 4 C from a point, where potential is 10 V to another point, where potential is V volt, find the value of V.

A very long, solid insulating cylinder with radius R has a cylindrical hole with radius a bored along its entire length. The axis of the hole is at a distance b from the axis of the cylinder, where altbltR (as shown in figure). The solid material of the cylinder has a uniform volume charge density rho . Find the magnitude and direction of the electric field inside the hole, and show that this is uniform over the entire hole. .