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Question:
Answer:
I have a hard time understanding these parts:
-the answer basically says increase power means decreased resistance. Doesn't Power=(I^2)R? So increased resistance means increased power?
-If a circuit is in series, shouldn't the current be the same at all points? So why would "the bulb with more resistance draw more current"?
Thanks!
Two light bulbs, one 60 watt bulb (higher resistance) and one 100 watt bulb (lower resistance) are placed in series. A current is run through them. Which bulb glows brighter?
Answer:
This is a paradox. You would think that the 100 watt bulb would light, but you have to reason out what is going on. A 60 watt bulb has greater resistance and when plugged in alone with the same current glows dimmer. A 100 watt bulb with less resistance draws more current and glows brighter by itself. But in series, the bulb with more resistance would draw more current, thus gets more voltage, so the 60 watt bulb glows brighter, has more power.
I have a hard time understanding these parts:
-the answer basically says increase power means decreased resistance. Doesn't Power=(I^2)R? So increased resistance means increased power?
-If a circuit is in series, shouldn't the current be the same at all points? So why would "the bulb with more resistance draw more current"?
Thanks!