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A loop PQR carries a current i = 2A as ...

A loop PQR carries a current `i = 2A` as shown in the figure. A uniform magnetic field B = 2T exists in space parallel to the plane of the loop . The magnetic torque on the loop is

A

16Nm

B

8 Nm

C

zero

D

4 Nm

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The correct Answer is:
B
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