In the applet above, each of the three circuits( Circuit A, Circuit B, and Circuit C) shows a light bulb (indicated as a resistor) that is connected to two identical batteries. Each circuit differs in the way the batteries are connected to the light bulb.

Study these circuits, and answer the following questions:

Which circuit causes the light bulb to shine most brightly?
Circuit A
Circuit B
Circuit C
The power output of the light bulb is equal for each circuit.
None of the above.
All of the above.

Which circuit causes the light to shine least brightly?
Circuit A
Circuit B
Circuit C
The power output of the light bulb is equal for each circuit.
None of the above.
All of the above.

Do any of the circuits have zero current?
Yes, circuit A
Yes, circuit B
Yes, circuit C
No

Which circuit could supply the greatest current to the light bulb?
Circuit A
Circucit B
Circuit C
Same for each circuit.