Question

A current of 3 A is flowing in a linear conductor having a
length of 40 cm. The conductor is placed in a magnetic field
of strength 500 gauss and makes an angle of 30º with the
direction of the field. It experiences a force of magnitude
(a) 3 × 10⁻⁴ N (b) 3 × 10⁻² N
(c) 3 × 10² N (d) 3 × 10⁴ N

Answer 1

opt (b) is your answer

hope it is helpful