`A` charge `-Q` is unformly distributed over a non-conducting semi-circular rod of radius `R`. The potential at the center is

A charge Q is uniformly distributed inside a non- conducting sphere of radius R . Find the electric potential energy stored in the system.

An electric charge Q is uniformly distributed around a semi-circle of radius a. Calculate the electric potential at the centre of this semi-circle.

Charges q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is

Charge q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is

Charges q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is

A charge Q is uniformly distributed only on the fourths portion of a ring of radius R . The elctric potential at centre of ring is

A positive charge Q is uniformly distributed along a circular ring of radius R .a small test charge q is placed at the centre of the ring.

A positive charge Q is uniformly distributed along a circular ring of radius R. A small test charge q is placed at the centre of the ring.

A positive charge Q is uniformly distributed along a circular ring of radius R .a small test charge q is placed at the centre of the ring .The