Which one of these bulbs will glow brightest?

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Nothinghere21
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#1
Report Thread starter 4 weeks ago
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https://imgur.com/a/WeFrX3N

I was sure that it is E because the highest current is flowing through E. But then I talked to someone who said that if you take the potential differences into account, D will glow brightest. Really confusing.
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papie
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Report 4 weeks ago
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(Original post by Nothinghere21)
https://imgur.com/a/WeFrX3N

I was sure that it is E because the highest current is flowing through E. But then I talked to someone who said that if you take the potential differences into account, D will glow brightest. Really confusing.
Well, think of it like this: You know that PD across both parallel branches is same. In the top branch, you've the PD being shared between 3 lamps but in the bottom branch only 1 lamp has the whole PD across it. The definition of PD is energy lost by charge between 2 points. So the greatest amount of energy is being lost in the bottom branch so Bulb D must glow the brightest.
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