Calculate the electric potential at the centre of a metallic ring with charge 0.02 `muC` made from a wire of length 12 cm.

Explanation

To calculate the electric potential at the center of a metallic ring with a charge of 0.02 µC and a wire length of 12 cm, we can follow these steps:

### Step 1: Determine the radius of the ring
The length of the wire that forms the ring is equal to the circumference of the ring. The circumference \( C \) of a circle is given by the formula:
\[ C = 2 \pi r \]
where \( r \) is the radius. Given that the length of the wire is 12 cm, we can set up the equation:
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