A non conduction ring of raducs R Has uniformly distributed positive charge ` Q.A` small part of the ring of length d, is removed (d lt lt R) . The electric field at the centre of the ring now be .

A nonconducting ring of radius R has uniformly distributed positive charge Q. A small part of the ring.of length d, is removed (d lt lt R) . The electric field at the centre of the ring will now be

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 non conducting ring of radius R has uniformly distributed positive chargeq. A small particle of mass m and charge -q is placed on the axis of the ring at point P and released If R gt gt x . The particle will undergo oscillations along the axis of symmerty with an angular frequency that is equal to

A charge q is uniformly distributed over a quarter circular ring of radius r . The magnitude of electric field strength at the centre of the ring will be