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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 AC supply of 20 V, 50 Hz. The secondary will have an output of
- 200 V, 50 Hz
- 2 V, 50 Hz
- 200 V, 500 Hz
- 2 V, 5 Hz
Correct answer: 200 V, 50 Hz
Solution
For a transformer, V_s/V_p = N_s/N_p . Since N_s/N_p = 5000/500 = 10 , the secondary voltage is 20 d7 10 = 200 V . The frequency remains the same as the input, so it is 50 Hz.
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