A uniform magnetic field of $2 \times 10^{-3} \mathrm{~T}$ acts along positive $Y$-direction. A rectangular loop of sides $20 \mathrm{~cm}$ and $10 \mathrm{~cm}$ with current of $5 \mathrm{~A}$ is in $Y-Z$ plane. The current is in anticlockwise sense with reference to negative $X$ axis. Magnitude and direction of the torque is:
$2 \times 10^{-4} \mathrm{~N}$- $\mathrm{m}$ along negative $Z$-direction
$2 \times 10^{-4} \mathrm{~N}$ - $\mathrm{m}$ along positive $X$-direction
$2 \times 10^{-4} \mathrm{~N}$ - $\mathrm{m}$ along positive $Y$-direction
$2 \times 10^{-4} \mathrm{~N}$ - $\mathrm{m}$ along positive $Z$-direction
Solution
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