A circular loop is placed in a uniform magnetic field of 0.30 T. The plane of the loop is at an angle of `90^(@)` to the field. The radius of the loop is decreasing at the rate of `2 mm // s`. Calculate the induced emf in the coil when the radius of the loop becomes 1 cm.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the Given Information
- Magnetic field strength (B) = 0.30 T
- The radius of the loop is decreasing at a rate of \( \frac{dr}{dt} = -2 \, \text{mm/s} = -0.002 \, \text{m/s} \)
- The radius of the loop when we need to calculate the induced emf (r) = 1 cm = 0.01 m

### Step 2: Calculate the Area of the Loop
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