Magnetic Effects Of Current Question 184

Question: A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at [CBSE PMT 1992; Haryana CEE 1996]

Options:

A) $ 0{}^\circ $ to the direction of the field

B) $ 45{}^\circ $ to the direction of the field

C) $ 90{}^\circ $ to the direction of the field

D) $ 135{}^\circ $ to the direction of the field

Show Answer

Answer:

Correct Answer: C

Solution:

In equilibrium angle between $ \overrightarrow{M} $ and $ \overrightarrow{B} $ is zero. It is happened, when plane of the coil is perpendicular to $ \overrightarrow{B} $