semicircle of radius R. The electric field at the centre 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

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

The electric field at a distance 3R/2 from the centre of a charge conducting spherical shell of radius R is E. The electric field at a distance R/2 from the centre of the sphere is

The electric field at a distance (3R)/2 from the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance R/2 from the centre of the sphere is :

The electric field at a distance (3R)/2 from the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance R/2 from the centre of the sphere is :