Question

A circular coil of area \( 2\sqrt{2} \, \text{cm}^2 \) and resistance \( 2\Omega \) is arranged vertically in the east-west direction. A uniform magnetic field \( 0.2 \, \text{T} \) is set up across the plane in the north to east direction. Now the magnetic field is removed at a steady rate in \( 0.4 \, \text{s} \). What is the current developed in the coil?

• A. \( 0.5 \times 10^{-3} \, A \)
• B. \( 0.5 \times 10^{-4} \, A \)
• C. \( 1 \times 10^{-4} \, A \)
• D. \( 0.5 \times 10^{-5} \, A \)

Hint:

Always convert area into SI units and carefully determine angle between field and area vector in flux calculations.

Answer 1

The Correct Option is B