When you hook up two identical bulbs in series, do they have the same brightness, or is the first one brighter than the other one?  a.The top bulb will be brighter because current comes from the positive end.   b.The bottom bulb will be brighter because electrons leaves the negative end. c. The two bulbs are the same brightness because current is the same. P=I2R d. The two bulbs are the same brightness because V=IR.

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Chapter28: Direct-current Circuits
Section: Chapter Questions
Problem 28.2CQ: A student claims that the second of two lightbulbs in series is less bright than the first because...
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When you hook up two identical bulbs in series, do they have the same brightness, or is the first one brighter than the other one?

 a.The top bulb will be brighter because current comes from the positive end.
 
b.The bottom bulb will be brighter because electrons leaves the negative end.

c. The two bulbs are the same brightness because current is the same. P=I2R

d. The two bulbs are the same brightness because V=IR.
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