Two identical lightbulbs are installed in two sockets connected in parallel and power is then applied to the combination so that both bulbs light. If one of the bulbs is then removed from its socket, the other one will
A) get brighter.
B) get dimmer.
C) remain equally bright.
D) go out. Power supply : Series connection: Parallel connection:

Question

Two identical lightbulbs are installed in two sockets connected in parallel and power is then applied to the combination so that both bulbs light. If one of the bulbs is then removed from its socket, the other one will
A) get brighter. 
B) get dimmer. 
C) remain equally bright. 
D) go out. Power supply : Series connection: Parallel connection:

Quizplus · Accepted Answer

When the bulbs are connected in parallel, each bulb receives the same amount of voltage. Therefore, when one bulb is removed, the voltage across the other bulb remains the same and it continues to emit the same amount of light. Hence, the brightness of the remaining bulb remains unchanged, and the correct answer is C.

Two Identical Lightbulbs Are Installed in Two Sockets Connected in Parallel