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Question: A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into eq...

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

A

0∘0 ^ { \circ } to the direction of the field

B

45∘45 ^ { \circ } to the direction of the field

C

90∘90 ^ { \circ } to the direction of the field

D

135∘135 ^ { \circ } to the direction of the field

Answer

90∘90 ^ { \circ } to the direction of the field

Explanation

Solution

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