Exam-style question
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What happens to the current in the secondary coil of a transformer if the voltage is stepped down?.
- A.It increases
- B.It decreases
- C.It remains the same
- D.It becomes zero
Model answer
What a good answer should say
- It increases
Explanation
Why this works
According to the principle of conservation of energy in transformers, when the voltage is stepped down, the current in the secondary coil increases to maintain power conservation. This is described by the relationship Pp = Ps, where P is power.
Common mistake
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