The number of turns on the coils of four ideal iron-cored transformers W, X, Y and Z are shown in the table below.
| Transformer | Number of turns on the secondary coil | Number of turns on the primary coil |
|---|---|---|
| W | 400 | 100 |
| X | 200 | 200 |
| Y | 80 | 320 |
| Z | 40 | 240 |
Each transformer is connected in turn to an alternating 120 V supply.
Which transformer will give the largest output current?
W
X
Y
Z
34 exam-style questions on OCR A A Level Physics Electromagnetism, covering Magnetic fields, Motion of charged particles, and Electromagnetism. Each one has a worked solution and a mark scheme showing where the marks go.