Two electrical appliances are linked to the mains supply. The lead attached to one appliance contains an earth wire. The cable connected to the other appliance does not require an earth wire. What is one reason for this difference?
- AOne appliance has a metal case, but the other appliance does not.
- BOne appliance is fitted with a fuse, but the other appliance is not.
- COne appliance is fitted with a switch, but the other appliance is not.
- DOne appliance needs more current than the other appliance.