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 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 point charge q is located at the centre fo a thin ring of radius R with uniformly distributed charge -q , find the magnitude of the electric field strength vectro at the point lying on the axis of the ring at a distance x from its centre, if x gt gt R .

A point charge q is located at the centre fo a thin ring of radius R with uniformly distributed charge -q , find the magnitude of the electric field strength vectro at the point lying on the axis of the ring at a distance x from its centre, if x gt gt R .

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

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 :

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 :