An electric current can produce a heating effect and a magnetic effect.
Which row shows the effect that a transformer uses and one application of a transformer?
| Effect used by a transformer | One application of a transformer | |
|---|---|---|
| A | Heating effect | Changing the voltage of an a.c. supply |
| B | Heating effect | Protecting a circuit from excessive current |
| C | Magnetic effect | Changing the voltage of an a.c. supply |
| D | Magnetic effect | Protecting a circuit from excessive current |
Row A
Row B
Row C
Row D
136 exam-style questions on CIE IGCSE Physics 4.5.6a Construction and operation of a transformer. Each one has a worked solution and a mark scheme showing where the marks go.