Transformers and the national grid

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Question 20
Easy

For the transformer shown in Figure 1, evaluate, in its simplest form, the ratio:

secondary voltage:primary voltage \text{secondary voltage} : \text{primary voltage} secondary voltage:primary voltage

Figure 1: Diagram of an ideal step-up transformer with a laminated iron core. The primary coil has 400 turns, an alternating input voltage of 120 V, and a current of 15 A. The secondary coil has 8,000 turns, an output voltage of 2,400 V, and a current of 0.75 A.

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Transformers and the national grid Questions

  1. GCSE
  2. /Physics
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