Electricity in the Home

negative ends

Alternating currents are produced by alternating voltages in which the positive and ________ keep alternating.

mains supply

The live wire provides the alternating potential difference (about 230V) from the ________.

neutral wire

The ________ completes the circuit- when the appliance is operating normally, current flows through the live and ________, at 0V.

UK mains supply

The ________ is an ac supply at around 50Hz.

ac supplies

In ________ the current is constantly changing direction.

There are two types of electricity supplies

alternating current(ac) and direct current(dc)

ac

mains supply is_

dc

battery supply is_

alternating current

ac meaning is______

direct current

dc meaning is_____

live, neutral and earth

the three wires are_______

provides alternating potential difference

the live wire___

completes the circuit, current flows through neutral and live. it is at 0V

the neutral wire______

is for safety

the earth wire______