Physics · 2010
NEET 2010 · Mains · Code C · Q75
A closely wound solenoid of 2000 turns and area of cross-section 1.5 × 10^-4 m^2 carries a current of 2.0 A. It is suspended through its centre and…
A closely wound solenoid of $\displaystyle 2000$ turns and area of cross-section $\displaystyle 1.5 \times 10^{-4} \mathrm{~m}^2$ carries a current of $\displaystyle 2.0$ A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field $\displaystyle 5 \times 10^{-2}$ tesla making an angle of $\displaystyle 30^{\circ}$ with the axis of the solenoid. The torque on the solenoid will be
Official answer
(3)
$\displaystyle 1.5 \times 10^{-2} \mathrm{~N} . \mathrm{m}$
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NEET (UG) 2010 Physics question, with the answer from NTA’s final answer key. Where our answers come from.