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Define mutual inductance. Write its SI unit.
Define mutual inductance. Write its SI unit.
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Mutual inductance quantifies the ability of one coil to induce emf in another due to changing magnetic flux.
Updated On: Jan 13, 2026
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Solution and Explanation
Mutual Inductance Definition
- Mutual inductance (\( M \)) describes how a change in current in one coil generates an electromotive force (emf) in a second coil through electromagnetic induction.
- The secondary coil's induced emf is calculated as:\[\mathcal{E}_2 = - M \frac{dI_1}{dt}\]Here, \( I_1 \) represents the current in the primary coil. - The standard unit for mutual inductance is the Henry (H), equivalent to 1 Weber per Ampere (1 H = 1 Wb/A).
- Mutual inductance (\( M \)) describes how a change in current in one coil generates an electromotive force (emf) in a second coil through electromagnetic induction.
- The secondary coil's induced emf is calculated as:\[\mathcal{E}_2 = - M \frac{dI_1}{dt}\]Here, \( I_1 \) represents the current in the primary coil. - The standard unit for mutual inductance is the Henry (H), equivalent to 1 Weber per Ampere (1 H = 1 Wb/A).
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