If you turn off one light and all the lights do not go off, what type of circuit is that?

If you turn off one light and all the lights do not go off, what type of circuit is that?

• A. Series circuit
• B. Open circuit
• C. Parallel circuit
• D. Short circuit

Answer: (C)

This situation shows a parallel circuit. In a parallel arrangement, each light has its own path to the power source. When you turn off one light, that branch is opened, but the other branches still have voltage and can carry current, so the remaining lights stay on. If it were a series circuit, all lights share one path, so turning off one would cut the current for the entire loop and all lights would go off. An open circuit would stop current everywhere, and a short circuit creates a low-resistance path that isn’t what’s described here.

This situation shows a parallel circuit. In a parallel arrangement, each light has its own path to the power source. When you turn off one light, that branch is opened, but the other branches still have voltage and can carry current, so the remaining lights stay on.

If it were a series circuit, all lights share one path, so turning off one would cut the current for the entire loop and all lights would go off. An open circuit would stop current everywhere, and a short circuit creates a low-resistance path that isn’t what’s described here.