The practical Illustration of the phenomenon of mutual induction in:
Correct answer: A. Transformer
- A. Transformer
- B. D.C. dynamo
- C. A.C. generator
- D. None of these
Explanation
The practical illustration of mutual induction is seen in a transformer. In a transformer, when an alternating current flows through one coil (the primary coil), it generates a changing magnetic field. This changing magnetic field induces an electromotive force (emf) in the secondary coil through mutual induction, without direct electrical connection. This phenomenon allows transformers to efficiently transfer electrical energy from one circuit to another at different voltage levels.
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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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