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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 the highest

B

Couple on loop `Q` will be the highest

C

Couple on loop `R` will be the highest

D

Couple on loop `S` will be the highest

Text Solution

Verified by Experts

The correct Answer is:
D
Couple of force on loop `S` will be maximum because for same perimeter the area of loop will be maximum and magnetic moment of loop `=ixxA`. So, it will also be maximum for loop `S`.
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