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IB Physics-B.5 -Paper2-Qc#9-NCT thermistor-circuit analysis
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This question is about a thermistor circuit.
The circuit shows a negative temperature coefficient (NTC) thermistor X and a 100 kΩ fixed resistor R connected across a battery.
The battery has an electromotive force (emf) of 12.0 V and negligible internal resistance.
a. Define electromotive force (emf)
b. The graph below shows the variation with temperature T of the
resistance R of the thermistor.
(i) Determine the temperature of X when the potential difference across R is 4.5 V.
(ii) State the range of temperatures for which the change in the resistance of the thermistor is most sensitive to changes in temperature.
(iii) State and explain the effect of a decrease in temperature on the ratio
Topic 5 electricity and magnetism playlist:
The circuit shows a negative temperature coefficient (NTC) thermistor X and a 100 kΩ fixed resistor R connected across a battery.
The battery has an electromotive force (emf) of 12.0 V and negligible internal resistance.
a. Define electromotive force (emf)
b. The graph below shows the variation with temperature T of the
resistance R of the thermistor.
(i) Determine the temperature of X when the potential difference across R is 4.5 V.
(ii) State the range of temperatures for which the change in the resistance of the thermistor is most sensitive to changes in temperature.
(iii) State and explain the effect of a decrease in temperature on the ratio
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