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JEE Main 2024 (30 Jan, Shift 1) · AC Generator & Transformer

AC Generator & Transformer question from JEE Main 2024 (30 Jan, Shift 1)

Q18JEE Main 2024 · 30 JAN · SHIFT 1Easy

AC Generator & Transformer

Primary coil of a transformer is connected to $220\text{ V}$ ac. Primary and secondary turns of the transformer are 100 and 10 respectively. Secondary coil of transformer is connected to two series resistances shown in figure. The output voltage $(V_0)$ is:

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Answer: (a)

$V_s = V_p\dfrac{N_s}{N_p} = 220 \times \dfrac{10}{100} = 22\text{ V}$
$V_0$ is the voltage across $7\text{ k}\Omega$ of the series pair (voltage divider).
$V_0 = 22 \times \dfrac{7}{15 + 7} = 7\text{ V}$
So the answer is (a) 7 V.

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