Question

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 will remain lit.
D. Bulb 1 will go out, but bulbs 2 and 3 2 will remain lit.

Answer 1

Serial bulb will go off

Answer 2

B.

Explanation:

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