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Four wires each of length 2.0 meters are...

Four wires each of length `2.0` meters area bent into four loops `P,Q,R` and `S` and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct?

A

couple on loop `P` will be highest

B

couple on loop `Q` will be highest

C

couple on loop `R` will be highest

D

couple on loop `S` will be highest

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