A friend is playing with a circuit that has two bulbs attached to a voltage supp
ID: 1576974 • Letter: A
Question
A friend is playing with a circuit that has two bulbs attached to a voltage supply, the two bulbs are in series and one bulb is brighter than the other. Your friend says that the reason that one of the bulbs is brighter is because the electrons are converted into light. Which of the following experiments would be a good test of your friends idea? (Choose all that apply)
A.
Place a voltmeter in parallel with each bulb and record the voltage.
B.
Place a voltmeter in series with each bulb and record the voltage.
C.
Place an ammeter in parallel with each bulb and record the voltage.
D.
Place an ammeter in series with each bulb and record the voltage.
E.
Swap the position of the two light bulbs.
F.
It is not possible to test this idea with the equipment you used in the lab.
Explanation / Answer
As n series combination the voltage across each bulb is different. So place a voltmeter in parallel with each bulb and record the voltage.
For a bulb more be the voltage more be the brightness.