High School

The circuit is working, and all three bulbs are lit. If a switch at A is opened, what will happen to the circuit?

A. All three bulbs will stay lit.
B. All three bulbs will go out.
C. Bulbs 1 and 2 will go out, but bulb 3 will remain lit.
D. Bulb 1 will go out, but bulbs 2 and 3 will remain lit.

Answer :

Answer:

B.

Step-by-step explanation:

Since all bulbs are connected in series, by opening switch A, you break the series connection, and all bulbs go out.

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