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29 May, 07:07

A device used to open and close an electric circuit is a (n)

a. light bulb.

b. energy source.

c. switch.

d. resistor.

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Answers (1)
  1. 29 May, 07:36
    0
    C. switch Think of it like a light switch. When you flip the switch and the light comes on, you are closing, or completing, the circuit. When the light turns off, you open, or break, the circuit.
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