Question

A coil of area \( 12 \text{ cm}^2 \) has \( 250 \) turns. Magnetic field of \( 0.2 \text{ Wb/m}^2 \) is perpendicular to the plane of the coil. The field is reduced to \( 0.1 \text{ Wb/m}^2 \) in \( 0.1 \text{ second} \). The magnitude of induced e.m.f. in the coil is

• A. 0.2 V
• B. 0.3 V
• C. 3 V
• D. 6 V

Hint:

- Always convert area to $\text{m}^2$ - $\Phi = BA$ when field is perpendicular

Answer 1

The Correct Option is B