A hairdresser is using a hairdryer that has a plastic casing. He notices that no wire is connected to the plug’s earth pin. Why is an earth connection not required?
- APlastic is an insulator.
- BThe hairdresser only touches the handle of the dryer.
- CThe hairdryer uses a.c. so cannot give the hairdresser a shock.
- DWet hands do not conduct electricity.