Question

12. A wire is bent in the form of an equilateral triangle
of side 100cm and carries a current of 2A. It is
placed in a magnetic field of induction 2.0T
directed perpendicular into the plane of paper. The
direction and magnitude of magnetic force acting
on each side of the triangle will be
B
(1) 2 N, normal to the side towards centre of the
triangle
(2) 2 N, normal to the side away from the centre
of the triangle
(3) 4 N. normal to the side towards centre of the
triangle
(4) 4 N, normal to the side away from the centre
of the triangle​

Answer 1

Answer:

4 N. normal to the side towards centre of the

triangle

Explanation:

By the left hand fleming's rule

F=B∝l

F1   =2×2×1=4N

F 2 =2×2×1=4N

F 3 =2×2×1=4N