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Magnetism and Matter question

2015 · Q107
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Magnetism and Matter question

2015 · Q107

NEETPhysicsMagnetism and MatterMCQ+4 / −1
A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire is suspended vertically in a uniform magnetic field of strength 0.2 weber/m2. The coil carries a current of 2 A. If the plane of the coil is inclined at an angle of 30o with the direction of the field, the torque required to keep the coil in stable equilibrium will be
  1. A
    0.24 Nm
  2. B
    0.12 Nm
  3. C
    0.15 Nm
  4. D
    0.20 Nm
View written solutionFree

Correct answer: D

AIPMT 2015 Physics - Magnetism and Matter Question 43 English Explanation

The required torque is $\tau $ = NIABsin$\theta $

= (50)(2 A)(0.012 m2)(0.2 Wb/m2) sin60°

= 0.20 N m
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