A wire is bent in a circle of radius 10cm. It is given a charge of `250 muC` which spreads on it uniformly. What is the electric potential at the centre?

A metal wire is bent in a circle of radius 20cm. It is given a charge of 400muC which is spread on it uniformly. Calculate the electric potential at its centre.

Asphere of radius 10 cm is given a charge of 20 muC on its surface. The surface charge density of sphere is

A spherical conductor of radius 12 cm has a charge of 1.6 xx 10^-7 C distributed uniformly its surface. What is the electric field, Inside the sphere

A spherical conductor of radius 12 cm has a charge of 1.6 xx 10^-7 C distributed uniformly its surface. What is the electric field, at a point 18 cm from the center of the sphere ?

A spherical conductor of radius 12 cm has a charge of 1.6 xx 10^-7 C distributed uniformly its surface. What is the electric field, just outside the sphere

A conducting sphere of radius R= 20 cm is given a charge Q= 16 mu C . What is vecE at centre?

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at the centre of the sphere is