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Torque

Four wires, e...

Question

Four wires, each of length 2.0 m are bent into four loops P, Q, R and S and then suspended in a uniform magnetic field. If the same current is passed in each, then the torque will be maximum on the loop

A

P

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B

Q

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C

R

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D

S

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Solution

The correct option is D S
$T α A$
circle has maximum area for given perimeter.

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