Which row in the table below correctly describes the typical operating potential difference and current type for a mains-powered electric hair dryer and a battery-powered car starter motor?
| Mains-powered electric hair dryer | Battery-powered car starter motor | |
|---|---|---|
| A | 230 V a.c.230\text{ V a.c.}230 V a.c. | 12 V d.c.12\text{ V d.c.}12 V d.c. |
| B | 230 V d.c.230\text{ V d.c.}230 V d.c. | 12 V a.c.12\text{ V a.c.}12 V a.c. |
| C | 12 V a.c.12\text{ V a.c.}12 V a.c. | 230 V d.c.230\text{ V d.c.}230 V d.c. |
| D | 230 V a.c.230\text{ V a.c.}230 V a.c. | 12 V a.c.12\text{ V a.c.}12 V a.c. |
Row A
Row B
Row C
Row D
42 exam-style questions on OCR GCSE Physics Simple circuits. Each one has a worked solution and a mark scheme showing where the marks go.