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NEETPhysicsMagnetic Effects of Current

What is the magnitude of the counter torque that must be applied to prevent the coil from turning when a circular coil of 30 turns and radius 8.0 cm, carrying a current of 6.0 A, is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T, where the field lines make an angle of 60° with the normal of the coil?

Options

  1. A2.4 Nm
  2. B3.1 Nm
  3. C4.8 Nm
  4. D6.2 Nm

Correct answer

B. 3.1 Nm

Step-by-step solution

Correct Option is : (B) 3.1 Nm

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