- 1(current)
Q. No.A resistor of \(40~\Omega\) is connected to the secondary of a step-down transformer, with an input voltage of \(200~\text V\) and an output of \(20~\text V\) across the secondary.
The resistance as seen in the primary circuit is: (ignoring power losses)
1. \(40~\Omega\)
2. \(4~\Omega\)
3. \(0.4~\Omega\)
4. \(4~\text k\Omega\)
Subtopic: Â Transformer |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The primary has \(100\) turns with \(100\) V RMS applied to it while the secondary has a total number of \(20\) turns, with the connection \(C\) made at the centre. The current \(i\) flowing towards \(C\) has the (RMS) value:
| 1. | \(2\) A | 2. | \(2\sqrt2\) A |
| 3. | \(\sqrt2\) A | 4. | zero |
Subtopic: Â Transformer |
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From NCERT
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NEET 2026 - Target Batch - Vital (For Freshers)
Hints
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NEET 2026 - Target Batch - Vital (For Freshers)
- 1(current)
Q. No.
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