To step up voltage, the number of turns in the secondary should be:
Correct answer: B. Greater than the number of turns in the primary
- A. Less than the number of turns in the primary
- B. Greater than the number of turns in the primary
- C. Equal the number of turns in the primary
- D. Infinite
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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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