NEET Physics Magnetic Force on Current MCQ Question
Which of the following statements about the magnetic force on a current-carrying loop in a magnetic field is correct?
The magnetic force on the arms AD and BC of the loop is zero.
The force exerted on arm AB is directed out of the plane of the loop.
The net force on the loop can be non-zero if the magnetic field is changed.
Torque on the loop is absent when the magnetic field is parallel to the arms.
Correct Answer
Detailed Explanation
The magnetic force on the arms AD and BC of the loop is indeed zero because the magnetic field is perpendicular to arm AB, leading to forces that cancel out. This is illustrated in the context where it describes the forces on the loop.
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