Standard Science Primary 5 Systems

What is the main function of a switch in a circuit?

A To provide energy to the bulbs
B To act as a conductor
C To allow or prevent the flow of electricity
D To increase the brightness of the bulbs
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Worked Solution

Step 1: A switch can be opened or closed. Step 2: An open switch breaks the circuit (stops flow); a closed switch completes it (allows flow).

Correct answer: To allow or prevent the flow of electricity

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