A uniform magnetic field of 2 × 10 - 3 T acts along positive Y-direction. A rectangular loop of sides 20 cm and 10 cm with current of 5 A is in Y-Z plane. The current is in anticlockwise sense with reference to negative X axis. Magnitude and direction of the torque is :

Question

A uniform magnetic field of 2 × 10 - 3 T acts along positive Y-direction. A rectangular loop of sides 20 cm and 10 cm with current of 5 A is in Y-Z plane. The current is in anticlockwise sense with reference to negative X axis. Magnitude and direction of the torque is :, 2 × 10 - 4 N m along positive Z –direction, 2 × 10 - 4 N m along negative Z-direction, 2 × 10 - 4 N m along positive X-direction, 2 × 10 - 4 N m along positive Y-direction

MARKS App · Accepted Answer

Magnetic moment is given by, M → = i A → = 5 × 0 . 2 × 0 . 1 - i ^ = 0 . 1 - i ^ τ → = M → × B → = 0 .1 − i ^ × 2 × 10 − 3 j ^ = 2 × 10 − 4 − k ^ N m

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