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The electric field of a ring of charge on the axis of the ring can be found by superposing the point charge fields of infinitesmal charge elements. … The electric fields in the xy plane cancel by symmetry, and the z-components from charge elements can be simply added.

## How do you calculate the electric field of a ring?

A ring of radius R has charge -Q distributed uniformly over it. Calculate the charge (q) that should be placed at the center of the ring such that the electric field becomes zero at a point on the axis of the ring distant R from the center of the ring. The value of q is **(Q/4) x **.

## Why is the electric field inside a ring zero?

What is the magnitude of the electric field at the center of a ring of charge of radius a? Assume there is a charge Q uniformly distributed over the ring. **The field from one side of the ring cancels the field from the other**, so the net field at the center is zero.

## What is the electric field due to a disc?

The electric field due to a uniformly charged disc at a point very distant from the surface of the disc is given by: (σ is the surface charge density on the disc) A) **E=σ2ε0**.

## What is electric field formula?

Electric field can be considered as an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge. The formula of electric field is given as; **E = F /Q**.

## At what point in a hollow charged sphere an electric field is zero?

If you have a conducting hollow sphere with a uniform charge on its surface, then will the electric field at **every point inside the shell** be 0.