Question:

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

(1) 2 x 10^-4 N-m along positive Z-direction

(2) 2 x 10^-4 N-m along negative Z-direction

(3) 2 x 10^-4 N-m along positive X-direction

(4) 2 x 10^-4 N-m along positive Y-direction

 

                                                         JEE-2024         

Solution:                
A uniform magnetic field of 2 x 10^-3 T acts along positive Y-direction. A rectangular loop of sides 20 cm and 10 cm with current of 5 A is Y-Z plane. The current is in anticlockwise sense with reference to negative X axis. Magnitude and direction of the torque is : (1) 2 x 10^-4 N-m along positive Z-direction (2) 2 x 10^-4 N-m along negative Z-direction (3) 2 x 10^-4 N-m along positive X-direction (4) 2 x 10^-4 N-m along positive Y-direction JEE-2024

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