STANDARDPhysics-Magnetism
STANDARD Physics Magnetic Moment of Solenoid MCQ Question
Type: MCQ-numerical-Medium
A solenoid of cross-sectional area 2 × 10⁻⁴ m² and 900 turns has 0.6 A m² magnetic moment. Then the current flowing through it is
A
2.24 A
B
2.34 mA
C
3.33 mA
D
3.33 A
Correct Answer
Option C
Detailed Explanation
The magnetic moment of solenoid mₛ = NIA. The current flowing through the solenoid is I = mₛ / (NA) = 0.6 / (900 × 2 × 10⁻⁴) = 3.33 mA.
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