Why does the heat decreases after increasing the resistance in a circuit?
Answers
Answer:
Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance.
Answer:
Yes, there are two separate issues that involve resistance to keep track of. The first is, what is the current that will run through the circuit, given the voltage. That depends on the resistance such that the lower the resistance, the higher the current, and that's where the counterintuitive behavior is coming into play when you look at the heat generated. But the second question is, where is that heat generated given that you already know the current, and this is the perfectly intuitive part-- the heat comes from the highest contribution to the resistance. So the reason you get lots of heat from a smaller resister is only because the resistance in the rest of the circuit is very low-- it's no longer true if you put something in that has even less resistance than what the rest of the circuit already has.
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