Exam-style question
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In a transformer, what happens to the voltage when the number of turns in the secondary coil is greater than in the primary coil?.
- A.The voltage decreases
- B.The voltage increases
- C.The voltage remains the same
- D.The voltage becomes zero
Model answer
What a good answer should say
- The voltage increases
Explanation
Why this works
In a step-up transformer, the voltage increases when the number of turns in the secondary coil is greater than in the primary coil, as described by the transformer turns ratio.
Common mistake
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