A) the plane of the coil is normal to the external magnetic field
B) the plane of the coil is parallel to the external magnetic field
C) flux through the coil is minimum
D) torque on the coil is maximum
Correct Answer: A
Solution :
When a current carrying coil is suspended freely in a uniform magnetic field, the magnetic field exerts a force on coil to bring the axis of coil parallel to the direction of field. Since, axis of coil is perpendicular to its plane. Then when axis of coil is parallel to the direction of magnetic field, then plane of coil will be perpendicular to the magnetic field.
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