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A rectangular loop of sides \( 20 \mathrm{~cm} \) and \( 10 \mathrm{~cm} \) carries a current of \( 5.0 \mathrm{~A} \). A uniform magnetic field of magnitude \( 2 \mathrm{~T} \) exists parallel to the longer side of the loop. The torque acting on the loop is
(1) \( 0.2 \mathrm{Nm} \)
(2) \( 0.3 \mathrm{Nm} \)
(3) \( 2 \mathrm{Nm} \)
(4) \( 3 \mathrm{Nm} \)
\( \mathrm{P} \)
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