- #1

- 15

- 0

**Does the thermistor dissipate more power initially, or after it has been left for some minutes? Justify your answer.**

My attempt:

Well the question tells you that the current increases, which must mean that the temperature of the circuit components increase, resulting in a decrease in resistance - as this is a thermistor.

I think that the thermistor would therefore dissipate more power after it has been left for some minutes, because if

**P = I x V**, then as the current rises over time, and the voltage supply remains constant, the overall Power should rise....

However I'm not sure....because it could also be initially, as the increase in the current will eventually slow down, and level off....so surely, in proportion to the time the circuit has been left on for....more power will have been dissipated right at the start (initially) than after a while, where the current rise has leveled off more.... I have no idea!!

Please help, thank you! :)