A student is selecting materials to construct a permanent compass needle and the magnetic core of an electrical transformer.
Which row in the table shows the most suitable metal for each application?
| Compass needle | Transformer core | |
|---|---|---|
| A | iron | steel |
| B | steel | copper |
| C | steel | iron |
| D | copper | iron |
Compass needle: iron; Transformer core: steel
Compass needle: steel; Transformer core: copper
Compass needle: steel; Transformer core: iron
Compass needle: copper; Transformer core: iron
169 exam-style questions on CIE IGCSE Physics Simple phenomena of magnetism, covering Simple phenomena of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.