Questions

A circular coil having mass m is kept above ground (x-z plane) at some height. The coil carries a current i in the direction shown in figure. In which direction a uniform magnetic field $\vec{B}$ be applied so that the magnetic force balances the weight of the coil?

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Positive x-direction

Negative x-direction

Positive z-direction

Magnetic force cannot balance its weight

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detailed solution

Correct option is D

Net force on a current carrying loop in a uniform magnetic field is zero. So, magnetic force cannot balance its weight.

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