The electric field at the centre of a uniformly charged ring is zero. What is the electric field and potential at the centre of a half ring if the charge on it be `Q` and its radius be `R`?

What is the intensity of the electric field at the centre of a charged 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.

A charge Q is distribution over a metal sphere of radius R. What is the electric field and electric potential at the centre ?

Find the electric field at the centre of a uniformly charged semicircular ring of radius R. Linear charge density is lamda

Find the electric field at the centre of a uniformly charged semicircular ring of radius R. Linear charge density is lamda

Find the electric field at the centre of a semicircular ring if it is uniformly positive charged.

A thin conducting ring of radius R is given a change +Q . The electric field at the centre O of the ring due to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is:

Calculate distance of the point from the centre of a uniformly charged ring on its axis, where it electric field intensity becomes maximum.