Evaluate the reasoning Your friend says that when two identical lightbulbs are c

Question

Evaluate the reasoning Your friend says that when two identical lightbulbs are connected in series to each other and then to a battery, the lightbulb connected closest to the negative pole of the battery will be brighter. He explains this by claiming that the second bulb will get fewer electrons because the first bulb will use up some of the electrons. Do you agree or disagree? How can you convince your friend of your opinion? You can use theoretical arguments or perform an experiment to test his suggestion.

Explanation / Answer

Hence, I disagree my friends suggestions.

explanation:

When two identical bulbs are connected in series, the potential drop across them will be:

V = I R

We know that its a fact that the same current flows through the resistors connected in series.

As the given bulbs are identical, they have got the same resistance and the same current is passing through them since they are connected in series, so the voltage drop across them will be the same.

V1 = I R1

V2 = I R2

Hence, I disagree my friends suggestions.

[but yes, if the resistance of the bulbs were not same then the srop across them would not have been the same]

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