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The first lamp will go out.

ANSWER: any lamps in series the first or the last if unscrewed will cause all lamps to extinguish no matter whether the source potential is in series or parallel

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14y ago

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What happens when you unscrew a light bulb in a circuit with two bulbs?

There are a few possible different results. One thing that happens in EVERY possible situation is that the bulb you unscrew is dark after you unscrew it. -- If the two bulbs are configured in either a series or a parallel arrangement and the power is off, then both bulbs are dark before you unscrew one, and nothing changes after. -- If the power is on and the two bulbs are configured in parallel, then the one you don't unscrew continues to glow after the other one is gone. -- If the power is on and the two bulbs are configured in series, then BOTH bulbs go out when you unscrew only one of them.


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What happens when you unscrew a light bulb in a series circuit?

When you unscrew a light bulb in a series circuit, the circuit will break and all the other light bulbs in the circuit will turn off. This is because in a series circuit, the current flows through each component in succession, so removing one component interrupts the flow of current to the rest of the circuit.


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