Question

A coil having 100 turns and area $0.02\ \text{m}^{2}$ is placed perpendicular to a magnetic field of $1\ \text{Wb m}^{-2}$. The magnetic flux linked with the coil is:

• A. zero
• B. 1 Wb
• C. 2 Wb
• D. 3 Wb
• E. 5 Wb

Hint:

"Perpendicular to the field" means $\theta = 0^\circ$ for the area vector.

Answer 1

The Correct Option is C

Step 1: Concept
Flux $\Phi = N B A \cos \theta$.

Step 2: Analysis
$N = 100, A = 0.02, B = 1$. Since the plane is perpendicular, the normal is parallel to $B$ ($\theta = 0^\circ$).

Step 3: Calculation
$\Phi = 100 \times 1 \times 0.02 \times 1 = 2\ Wb$. Final Answer: (C)