The magnetic moment of a current (l) carrying circular coil of radius – InterviewSolution

1.

The magnetic moment of a current (l) carrying circular coil of radius (r) and number of turns (n) varies as(a) 1/r2(b) 1/r(c) r(d) r2

Answer»

Correct option (d) r²

Explanation:

The magnetic moment of a current carrying conductor = i.n πr² = niA.

i.e. Magnetic moment ∝ r²

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