AP EAMCET · PHYSICS · Alternating Current
The primary of a transformer has 100 turns and operates at \(100 \mathrm{~V}-200 \mathrm{~W}\). The number of turns in the secondary, if the output voltage is \(2000 \mathrm{~V}\), then
- A 2000
- B 200
- C 100
- D 500
Answer & Solution
Correct Answer
(A) 2000
Step-by-step Solution
Detailed explanation
For a transformer, it is given that, \(N_P=100\), \(V_P=100 \mathrm{~V}, V_S=2000 \mathrm{~V}\) We know that, \(\begin{aligned} & \frac{N_S}{N_P}=\frac{V_S}{V_P} \\ \Rightarrow \quad & N_S=\frac{V_S N_P}{V_P}=\frac{2000 \times 100}{100}=2000 \end{aligned}\)
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