AIPMT MAIN2008Physics-Electromagnetic Induction

AIPMT MAIN 2008 Physics Magnetic Flux MCQ Question

Type: MCQ-conceptual-Medium-Class 12

A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction 1πwbm2\frac{1}{\pi} \frac{wb}{m^2} in such a way that its axis makes an angle of 60° with B\vec{B}. The magnetic flux linked with the disc is

A

0.01 wb

B

0.02 wb

C

0.06 wb

D

0.08 wb

Correct Answer

Option B

Detailed Explanation

Magnetic flux Φ=BAcosθ=1π×π(0.2)2×cos60°=0.02 wb\Phi = BA \cos \theta = \frac{1}{\pi} \times \pi (0.2)^2 \times \cos 60° = 0.02 \text{ wb}.

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