A wire is bent in the form of an equilateral triangle of side $100 \,cm$ and carries a current of $2 \,A$. It is placed in a magnetic field of induction $2.0 \,T$ directed perpendicular into the plane of paper. The direction and magnitude of magnetic force acting on each side of the triangle will be
A$2 \,N$, normal to the side towards centre of the triangle
B$2 \,N$, normal to the side away from the centre of the triangle
C$4 \,N$, normal to the side towards centre of the triangle
D$4 \,N$, normal to the side away from the centre of the triangle
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C$4 \,N$, normal to the side towards centre of the triangle
c (c)
$\vec{F} =i(\vec{i} \times \vec{B})$
$=2(1)(2)$
$=4\,N$
Normal to side towards centre of triangle.
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