Electrical products work by using circuits and switches. Circuits allow electricity to flow through - and so power - bulbs, motors and buzzers. Switches are used to control circuits. They can break a circuit - and so switch bulbs, motors and buzzers off - or complete a circuit - and so switch them on again. Many products work by using electricity.
Join 4M+ learners. Unlock unlimited quizzes, wrong-answer tracking, flashcards + reminders, study guides, and 1-on-1 challenges.