A rubber balloon is given a charge Q distributed uniformly over its surface. Is the field inside the balloon zero everywhere if the balloon does not have a spherical surface?

A spherical shell made of plastic, contains a charge Q distributed uniformly over its surface. What is the electric field inside the shell? If the shell is hammered to deshape it without altering the charge. Will the field inside be changed? What happend if the shell is made of a metal?

A spherical conductor of radius 0.12 m has a charge of 1.6 xx 10^-7C distributed uniformaly on its surface. What is the electric field (i) Inade the sphere (ii) on the sphere (iii) at a point 0.18 m from the centre of the sphere?

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.

A hollow tube is carrying an electric current along its length distributed uniformly over its surface. The magnetic field

A spherical coductor of radius 12cm has a charge of 1.6 xx 10^(-7)C distributed uniformly on its surface. What is the electric field (a) inside (b) just outside the sphere (c), at a point 18cm from the centre of the sphere ?

A circular wire-loop of radius a carries a total charge Q distributed uniformly over its length . A small length dL of the wire is cut off. Find the electric field at the centre due to remaining wire.

A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of a semicircle. Find the magnitude of the electric field at the centre of curvature of the semicircle.

A long, cylindrical wire of radius b carries a current i distributed uniformly over its cross section. Find the magnitude of the magnetic field at a point inside the wire at a distance a from the axis.

A spherical conducting shell of inner radius r_(1) and outer radius r_(2) has a charge Q. a. A charge 'q' is placed at the centre of the shell. What is the surface charge density on the inner and outer of the shell? b. Is the electric field inside a cavity (with not charge) zero, even if the shell is not spherical, but has any irregular shape? Explain.