1.

A small coil of radius .002 m is placed on the axis of a magnet of magnetic moment 105 JT-1 and lenght .1 m at a distance of .15m from the center of the magnet Find the net force on coil when a current of 2.0 A is passed through it?

A. 4.4X10-3 N
B. 4.0X10-2 N
C. 5.4X10-3 N
D. None of these
Answer» B. 4.0X10-2 N


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