Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

A solenoid of length 0.4 m having 500 turns of wire carries a current of 3 A. A coil of 10 turns and radius 0.01 m carries a current of 0.4 A. What will be the torque required to hold the coil in the middle of the solenoid with its axis perpendicular to the axis of the solenoid?

Options:

$4.9 × 10^{-7} Nm$

$5.9 × 10^{-6} Nm$

$3.75 × 10^{-7} Nm$

$6.45 × 10^{-6} Nm$

Correct Answer:

$5.9 × 10^{-6} Nm$

Explanation:

The correct answer is Option (2) → $5.9 × 10^{-6} Nm$