Electricity in the home

• Two main types of electricity supplies- alternating current (ac) and direct current (dc)
• ac supplies have their current constantly changing direction.
• These ac currents are produced by altering the potential difference in which the positive and negatve ends keep alternating.
• Dc is created by a direct potential difference which is used in batteries and cells.

Wires mostly all have three smaller ones- copper core with a plastic coating.

From the colour of the wire you know what its for and its pd:

• Blue- neutral = carries away the current, completes the circuit, 0V
• Brown- live = carries the current in…