A hairdryer is plugged into a socket that is connected to the UK domestic mains supply.
Complete the following sentences about the UK domestic mains supply.
The mains supply is an alternating supply with a frequency of ............... Hz and a voltage of about ............... V.
The cable of the hairdryer contains a live wire, a neutral wire and an earth wire.
State the potential difference between:
(i) the live wire and earth
(ii) the neutral wire and earth
A bicycle lamp contains two 1.5 V cells. A reading lamp is plugged into the mains supply.
Which one of these supplies a direct current? Tick one box.
| A | a mains socket in a house |
| B | a 1.5 V cell |
| C | the alternator of a power station generator |
| D | the mains supply to a street lamp |
Describe the movement of charge in a direct current.
Describe the movement of charge in an alternating current.
The mains supply has a frequency of 50 Hz. State what this tells you about the movement of charge in the wires of the reading lamp.
