The circuit is working, and all three bulbs are lit. If a switch at A is opened,
what will happen to the circuit?
A
B
Cc
O
A. Bulbs 1 and 2 will go out, but bulb 3 will remain lit.
O
B. Bulb 1 will go out, but bulbs 2 and 3 will remain lit.
O
c. All three bulbs will stay lit.
O
D. All three bulbs will go out

The answer is d because once one part of the power is cut off all of it goes out

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

Entropy is a thermodynamic quantity that represents the amount of thermal energy of a system that can't be transformed into work. it is often represented as an amount of disorder or randomness of a system. and its natural tendency is to increase over time. so the correct answer is b).