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ExamsNEETPhysics

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

  1. 200 V, 50 Hz
  2. 2 V, 50 Hz
  3. 200 V, 500 Hz
  4. 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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