A semicircular ring of radius 0.5 m is uniformly charged with a total charge of `1.5 xx 10^(-9)` coul. The electric potential at the centre of this ring is :

Semicircular ring of radius 0.5 m is uniformly charged with a total charge of 1.4 xx 10^(-9) C . The electric field intensity at centre of this ring is :-

A thin half- ring of radiusb 20 cm is uniformly charged with a total charge of 0.7 nC . Find the magnitude of the electric field at the centre of the centre of the half-ring.

A thin half ring of radius R = 20 cm is uniformly charged with a total charge q = 0.70 nC .Find the magnitude of the electric field strength at the curvaite centre of this half-ring.

A quarter ring of radius R is having uniform charge density lambda . Find the electric field and potential at the centre of the ring.

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

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