Question

A straight current carrying conductor is kept along the axis of circular loop carrying current. The force exerted by the straight conductor on the loop is 

(A) Perpendicular to the plane of the loop 

(B) ln the plane of the loop, away from the center 

(C) ln the plane of the loop, towards the center 

(D) Zero

Answer 1

Correct option  (D) Zero

Explanation:

Magnetic field due to straight current carrying conductor is concentric circles which is parallel to the plane of the loop. Hence, required force is zero.