Question

A coil carrying electric current is placed in uniform magnetic field, then :

• A. Torque is formed
• B. emf is induced
• C. Both (a) and (b) are correct
• D. None of the above

Answer 1

The correct option is A Torque is formed

As magnetic field is uniform so its rate of change with time is zero. By Faraday's law of induction, no emf is induced.

But current carrying coil experience torque inside magnetic field, which is cross product of magnetic moment of the coil and the magnetic field.

$\overrightarrow{\tau }=\overrightarrow{M}\times \overrightarrow{B}$

Option A is correct.