A regular hexagonal loop of side a carries current I in a uniform magnetic field B. Its area vector initially makes 60° with B. What external work is required to rotate it slowly until its magnetic moment becomes antiparallel to B?

Physics · Magnetic effect of current · magnetic moment and torque on current carring loop in magnetic field

JEE MainsNEET

A regular hexagonal loop of side a carries current I in a uniform magnetic field B. Its area vector initially makes 60° with B. What external work is required to rotate it slowly until its magnetic moment becomes antiparallel to B?

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