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Why is a switch used in an electric circuit? A. It is used to increase the power. B. It is used to open and close the circuit. C. It is used to decrease the magnetism.
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Why is a switch used in an electric circuit?

A. It is used to increase the power.
B. It is used to open and close the circuit.
C. It is used to decrease the magnetism.

User Brownie
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B.) It is used to open and close the circuit
User Andrew Hagner
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