Q.
A rectangular loop carrying a current $i$ is situated near a long straight wire such that the wire is parallel to the one of the sides of the loop and is in the plane of the loop. If a steady current $I$ is established in wire as shown in figure, the loop will
A) Rotate about an axis parallel to the wire
B) Move away from the wire to towards right
C) Move towards the wire
D) Remain stationary
Explanation
(c) Force of attraction on the arm $SP$ of loop due to conductor will be stronger than the force of repulsion on arm $QR$ of the loop. Due to which the loop will move towards the conductor.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.