Which statement most accurately describes how a light bulb is affected by a switch in a circuilt that consists of a single loop?
A. The light bulb will be on regardless of the state of the switch
B. The light bulb will be off regardless of the state of the switch
C. The light bulb will be on if the switch is open
D. The light bulb will be off if the switch is open
I'm thinking that the answer is D but please help me?

Question

Which statement most accurately describes how a light bulb is affected by a switch in a circuilt that consists of a single loop?
A. The light bulb will be on regardless of the state of the switch
B. The light bulb will be off regardless of the state of the switch
C. The light bulb will be on if the switch is open
D. The light bulb will be off if the switch is open
I'm thinking that the answer is D but please help me?

matt101 · Answer

Why do you say D?

anonymous · Answer

Because when a switch is open the current can't go through all the way to the light bulb.

matt101 · Answer

Right!

The circuit is not complete, so current can't travel.