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If 'N' is the number of turns in a circular coil, the value of its self inductance varies
as
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as
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Verified Answer
The correct answer is:
$\mathrm{N}^{2}$
Self inductance of a solenoid $=\frac{\mu_{0} \mathrm{~N}^{2} \mathrm{~A}}{\ell}$
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