When you need a multimeter for testing electrical equipment around the home, it's vital to know what all those symbols around ...

Resistance Symbols. Multimeters measure resistance by sending an electric current through a circuit. The resistance is then ...

When it comes to electrical circuits, there’s a lot to remember and understand. We've got you covered with this Intro to Circuits BBC Bitesize guide.

An electric current is a flow of charged particles in one direction. In solids, ... The symbol for electric current is I. Test: Conventional current or free electron flow? Back to top.