alleryA circular wire loop of area A carries current I. Its magnetic moment equals?
AI + A
BI / A
CIA
DA / I
Answer & Solution
Correct answer: C. IA
1. The magnetic moment of a current loop depends on current and area.
2. Its magnitude is the product of the two.
3. So it equals IA.
_Source: Wikipedia, Magnet, Magnetic moment_
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