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AIPMT PRELIMS2010Physics-Magnetism

AIPMT PRELIMS 2010 Physics Magnetic Force on Current Loop MCQ Question

Type: MCQ-conceptual-Medium-Class 12

A square current carrying loop is suspended in a uniform magnetic field acting in the plane of the loop. If the force on one arm of the loop is F⃗\vec{F}, the net force on the remaining three arms of the loop is

A

F⃗\vec{F}

B

3F⃗\vec{F}

C

−F⃗-\vec{F}

D

−3F⃗-3\vec{F}

Correct Answer

Option C

Detailed Explanation

In a uniform magnetic field, the forces on opposite sides of the loop are equal and opposite, resulting in a net force of zero. Therefore, the net force on the remaining three arms is −F⃗-\vec{F} .

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