In an AC generator, AC reverses its direction _ times per second.
Correct answer: C. 50
- A. 30
- B. 40
- C. 50
- D. 60
Explanation
The frequency of an AC generator is 50 times per second.Hence, the current reverses its direction 50 times.
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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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