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The primary winding of a transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an A.C. supply of 20 V, 50 Hz. The secondary will have an output of
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- 2 V, 5 Hz
- 200 V, 500 Hz
- 2V, 50 Hz
- 200 V, 50 Hz
Correct Option: D
The transformer converts A.C. high voltage into A.C. low voltage, but it does not cause any change in frequency. The formula for voltage is
| Es | = | Ns | ||
| Ep | Np |
| ⇒ Es = | Ns | × Ep |
| Np |
| = | 5000 | × 20 = 200V |
| 500 |
Thus, output has voltage 200 V and frequency 50 Hz.
