A metal wire is bent into a circle of radius 10 cm. It is given a charge of `200muC`, which spreads on it uniformly. Calculate the electric potential at its centre.

A wire is bent in circle of radius 10 cm and has been given a charge of 250muC which spreads on the wire uniformly. What is the electric fields intensity at the centre.

A conducting sphere of radius 5 cm has a charge of 20 esu. What is the electric potential at a distance of 10 cm away from its centre?

A regular hexagon of side 10 cm has a charge 5muC at each of its vertices. Calculate the potential at the centre of the hexagon.

The radius of a charged hollow metal sphere is 5 cm and its surface potential is 10V. Potential at its centre is

Two indentical wires A and B, each of length I, carryi the same current I. Wire is bent into a circle of radius R and wire B is bent to form a square of side a. if B_(A) and B_(B) are the values of magnetic field at the centres of the circle and square respectively, thne the ratio B_(A)//B_(B) is

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

A spherical conductor of radius 12 cm has a charge of 1. 6 xx 10^(-7) C distributed uniformly on its surface. What is the electric field at a point 18 cm from the centre of the sphere ?

A spherical conductor of radius 12 cm has a charge of 1. 6 xx 10^(-7) C distributed uniformly on its surface. What is the electric field inside the sphere ?