Mains Electricity - GCSE Physics Definition

Mains electricity, also known as domestic electricity, is the type of electricity that is delivered to homes and buildings from the national power grid. It is used to power everyday devices and appliances, like lights, televisions, and refrigerators. In the UK, mains electricity is supplied as an alternating current (AC) and typically has a voltage of 230 volts (V) and a frequency of 50 hertz (Hz). This means the direction of the electric current changes 50 times per second. Understanding mains electricity is important for learning about how energy is used in our homes and the safety measures needed to work with electrical devices.