A circular ring of radius r carries a charge Q uniformly spread on it. A small length dl is cut off. Find the electric field at the centre due to the remaining wire.

(a) Two pont charges 9 Q and - 25 Q are fixed at separation d .At what distance from 9 Q , electric field is zero on the line joining the charges ? (b) A circular ring of radius r carries a total charge Q distributed uniformly over it. A small length dl of wire is removed . Find electric field at center due to the remaining ring.

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 cjircular 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 cjircular 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 circular wire loop of radius R carries a total charge q distributed uniformly over its length. A small length x (ltlt R) of the wire is cut off. Find the electric field at the centre due to the remaining wire.

A circular wire loop of radius R carries a total charge q distributed uniformly over its length. A small length x (ltlt R) of the wire is cut off. Find the electric field at the centre due to the remaining wire.

A hollow sphere of radius a carries a total charge Q distributed uniformly over its surface. A small area dA of the sphere is cut off. Find the electric field at the centre due to the remaining sphere.

Charges 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

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