Two ideal transformers, X and Y, are connected so that the secondary of X supplies the primary of Y.
The table shows the numbers of turns.
| Transformer | Primary turns | Secondary turns |
|---|---|---|
| X | 300 | 1200 |
| Y | 800 | 100 |
An alternating potential difference of 24 V is applied to the primary of X.
What is the potential difference across the secondary of Y?
0.75 V0.75\ \mathrm{V}0.75 V
12 V12\ \mathrm{V}12 V
48 V48\ \mathrm{V}48 V
768 V768\ \mathrm{V}768 V
108 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid, covering 13.2.1 Transformers and induction, 13.2.2 The transformer turns-ratio equation, 13.2.3 The National Grid, 13.2.4 The transformer power equation, and 13.2.5 Advantages of high-voltage transmission. Each one has a worked solution and a mark scheme showing where the marks go.