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A 2 amp current is flowing through two different small circular copper coils having radii ratio 1:2. The ratio of their respective magnetic moments will be:
A 2 amp current is flowing through two different small circular copper coils having radii ratio 1:2. The ratio of their respective magnetic moments will be:
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Remember that magnetic moment is proportional to the square of the radius when the current is constant (\(M \propto r^2\)). If the radii ratio is 1:2, the magnetic moment ratio will be \(1^2 : 2^2 = 1:4\).
Updated On: Nov 26, 2025
- \( 1:2 \)
- \( 2:1 \)
- \( 4:1 \)
- \( 1:4 \)
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