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Magnetic Field Due to Current in a Solenoid

A small coil ...

Question

A small coil of $N$ turns area $A$ and a current $1$ flows through it.The magnetic dipole moment of this coil will be

A

N I / A

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B

N I^{2} A

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C

N^{2} A I

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D

N I A

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Solution

The correct option is C $N I A$
Magnetic dipole moment of coil $= N I A$

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