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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

1. 2 × 10 –4 N-m along positive Z-direction
2. 2 × 10 –4 N-m along negative Z-direction
3. 2 × 10 –4 N-m along positive Y-direction
4. 2 × 10 –4 N-m along positive X-direction

Correct answer: 2 × 10 –4 N-m along negative Z-direction

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