A wire of length l in the form of a square loop lies in a plane normal to a magnetic field `B_(0)`. If this wire is converted into a circular loop in time, then find the average induced emf.

Explanation

To find the average induced emf when a wire of length \( L \) in the form of a square loop is converted into a circular loop, we follow these steps:

### Step 1: Determine the Area of the Square Loop
The wire forms a square loop, and since the length of the wire is \( L \), each side of the square loop will be:
\[ \text{Side length of square} = \frac{L}{4} \]
The area \( A_1 \) of the square loop is given by:
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