STANDARDPhysics-Electromagnetic Induction
STANDARD Physics Magnetic Flux MCQ Question
Type: MCQ-numerical-Medium-Class 12
A circular disc of radius 0.2 m is placed in a uniform magnetic field of induction Wb m⁻² in such a way that its axis makes an angle of 60° with B. The magnetic flux linked with the disc is
A
0.02 Wb
B
0.06 Wb
C
0.08 Wb
D
0.01 Wb
Correct Answer
Option A
Detailed Explanation
The magnetic flux is given by Φ = B • A • cos θ. Here, A = πr² = π(0.2)², B = , and θ = 60°. Thus, Φ = • π(0.2)² • cos 60° = 0.02 Wb.
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