Transformer Ideal
Mediumphysics
Ideal transformer voltage ratio equals turns ratio V2/V1 =:
Select the correct option:
Solution
Incorrect! Answer:
N2/N1
In an ideal transformer (no flux leakage, zero resistance), the EMF induced in each turn is the same (e=−dϕ/dt).
- Primary voltage: V1=N1e
- Secondary voltage: V2=N2e
- Ratio: V1V2=N1N2 Also, from power conservation (V1I1=V2I2), the current ratio is the inverse: I1I2=N2N1.
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About This Question
- Subject
- physics
- Chapter
- electromagnetic induction and ac
- Topic
- transformer ideal
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
N2/N1
In an ideal transformer (no flux leakage, zero resistance), the EMF induced in each turn is the same (e=−dϕ/dt).
- Primary voltage: V1=N1e
- Secondary voltage: V2=N2e
- Ratio: V1V2=N1N2 Also, from power conservation (V1I1=V2I2), the current ratio is the inverse: I1I2=N2N1.
This medium difficulty physics question is from the chapter electromagnetic induction and ac, covering the topic of transformer ideal. It appeared in the 2025 exam.
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