Question

1. current can flow in a circuit that has been opened by the operation of a switch.

true

false

Explanation:

Define an open circuit

An open circuit is a path that is broken or interrupted, preventing charge carriers from flowing. Using the Electric Current knowledge point, we know that current requires a continuous, closed conductive loop to flow from the source through the load and back.

Analyze the effect of a switch

A switch is a control device designed to open or close a circuit. When a switch is operated to "open" the circuit, it physically separates its internal contacts, creating an air gap with extremely high resistance.

Determine current flow in an open circuit

Because the open switch introduces an air gap, the conductive path is broken. This interruption stops the flow of charge carriers, meaning the electric current drops to zero. Therefore, current cannot flow in a circuit that has been opened by a switch.

Answer:

• True
• False (Correct answer)