Define the mutual-inductance of two coils. Write its formula. Also define its SIunit
Question
Define the mutual-inductance of two coils. Write its formula. Also define its SI unit.
Solution
Mutual inductance is a property of two coils where a change in current in one coil induces a voltage in the other coil. It is a measure of how much one coil will affect the other.
The formula for mutual inductance (M) is given by:
M = (N2 * Φ2) / I1
where:
- N2 is the number of turns in the second coil,
- Φ2 is the magnetic flux through one loop of the second coil due to the current I1 in the first coil,
- I1 is the current in the first coil.
The SI unit for mutual inductance is the henry (H). One henry is the amount of mutual inductance when a change in current of one ampere per second in one coil induces an electromotive force of one volt in the other coil.
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