Answer:
A switch connects or separates two pieces of metal. When the metal pieces are connected, the circuit is closed. Electrons can flow through the circuit. When the metal pieces are separated, the circuit is open.
you need to observe first to know that the circuit is open or close
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Answers & Comments
Answer:
A switch connects or separates two pieces of metal. When the metal pieces are connected, the circuit is closed. Electrons can flow through the circuit. When the metal pieces are separated, the circuit is open.
Answer:
you need to observe first to know that the circuit is open or close