A switch is something that is used in a circuit to allow the flow of current by completing the circuit or to stop the flow of current by creating a gap in it.
Which of the following is an ESSENTIAL characteristic of the switch in order to allow the electricity to flow through the circuit?
a. It must be made only of metal.
b. It must be made only of plastic.
c. It can be made of any material, but must be flexible like a wire.
d. It can be made of any material, but must be a good conductor of electricity.
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Answer:
a. It must be made of metal
Explanation:
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