A charge of 500 `muC` is distributed uniformly over the circumference of a ring of radius 25 cm. What will be be electric potential at the centre of ring?

Explanation

To find the electric potential at the center of a ring with a uniformly distributed charge, we can follow these steps:

### Step 1: Understand the Problem
We have a ring of radius \( R = 25 \, \text{cm} = 0.25 \, \text{m} \) with a total charge \( Q = 500 \, \mu\text{C} = 500 \times 10^{-6} \, \text{C} \) uniformly distributed over its circumference. We need to calculate the electric potential \( V \) at the center of the ring.

### Step 2: Use the Formula for Electric Potential
The electric potential \( V \) at a point due to a charge \( dq \) at a distance \( r \) is given by the formula:
\[
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