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GCSE Physics 2020-2022 OCR Gateway

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Question:

Tim has a Series Circuit that has [In Order] a Power Supply, Thermistor, Fixed Resistor and a Fan [Fan and Resistor are Parallel] Explain What is Going On in this Sensing Circuit?

Author: go kys



Answer:

-So lets Clear some Facts. The Potential Difference will be the Same for the Fixed Resistor and the Fan, Because they're Parallel. -The Power Supply Shares out its Potential Difference [Volts] with the Thermistor and the Fixed Resistor/Fan according to the Resistance -If a Component had a High Resistance, it would have a High Potential Difference -So if that Circuits Surroundings gets Hotter, The Thermistors Resistance would Decrease, Meaning the Potential Difference it had to play with is Less, and is Given out to the Fixed Resistor and the Fan. [They're Still Parallel] -The Fan with its Extra Potential Difference would Spin Faster.


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go kys
go kys