The SI unit of mutual inductance is:
Correct answer: C. Henry
- A. Farad
- B. Coulomb
- C. Henry
- D. Ampere
Explanation
The SI unit of mutual inductance is the Henry (H). It is derived from the equation relating induced voltage (V), rate of change of current (di/dt), and mutual inductance (M), which is expressed as V=M (di/dt). Therefore, mutual inductance is measured in henrys (H).
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About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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