For electricity to flow, everything needs to be connected in a big ring. It’s called a circuit. For example, the lights in most houses and flats are part of a circuit controlled by the consumer unit, ...

Just what happens behind your walls when you flip a light switch? Or when you turn on the television or your computer? Electricity, wiring and circuitry power everything we do, and knowing how these ...

Your 14-year-old kids have probably spent as much of their summer holidays on their phones or computers as they have at the beach or moaning about how bored they are. Yet when they learn about ...