Four wires each of length $2.0\, metres$ are 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
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(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 $ = i \times A.$ So, it will also be maximum for loop $S$.
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