and lamps close lampA component which produces light when current flows through it. Lamps are commonly known as light bulbs. can be connected together to form a circuit. A circuit diagram shows ...

Each component makes something happen using electricity. The picture above shows a circuit with a bulb and a battery cell in. The diagram next to it shows the symbols for each of these components.

Fastest finger first indicators (FFFIs) bring precision to quiz games, measuring contestants’ reaction times with accuracy.