A single circular loop of radius $1.00\, m$ carries a current of $10.0\, mA$. It is placed in $a$ uniform magnetic field of magnitude $0.500\, T$ that is directed parallel to the plane of the loop as suggested in the figure. The magnitude of the torque exerted on the loop by the magnetic field is.
A$1.57 × 10^{-2} \,N × m$
B$3.14 × 10^{-2} \,N × m$
C$6.28 × 10^{-2}\, N × m$
D$9.28 × 10^{-2}\, N × m$
Medium
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A$1.57 × 10^{-2} \,N × m$
a $\vec {\tau}=\vec {\mu} \times \vec {\mathrm{B}}$
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