Question

in a movie, a character cuts a wire, which stops the countdown timer of a bomb. what does cutting the wire do to the circuit? it opens the circuit so that electric charges do not flow to the timer. it closes the circuit so that electric charges do not flow to the timer. it opens the circuit so that electric charges flow to the timer. it closes the circuit so that electric charges flow to the timer.

Explanation:

To solve this, we recall circuit concepts: An open circuit has a break (no current flow), a closed circuit is complete (current flows). Cutting the wire creates a break (opens the circuit), so current (electric charges) can't flow to the timer, stopping it. Let's analyze options:

• Option 1: "It opens the circuit so that electric charges do not flow to the timer." Matches the concept (open circuit → no current).
• Option 2: Closing the circuit would allow current, so wrong.
• Option 3: Opening the circuit stops, not allows, current. Wrong.
• Option 4: Closing the circuit allows current, opposite of what's needed. Wrong.

Answer:

A. It opens the circuit so that electric charges do not flow to the timer.