According to Faraday's Law, emf induced in circuit depends on:
Correct answer: B. Rate of change of magnetic flux
- A. Max. magnetic flux
- B. Rate of change of magnetic flux
- C. Change in magnetic flux
- D. Initial flux
Explanation
Faraday's law of induction (to distinguish it from his laws of electrolysis), states that the magnitude of the emf induced in a circuit is proportional to the rate of change of the magnetic flux that cuts across the circuit.
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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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