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Resistance and Resistivity

Resistance and Resistivity problem 36

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A battery of electromotive force (e.m.f.) and negligible internal resistance is connected to a fixed resistor of resistance and a thermistor of resistance , as shown.

Initially, the temperature of the thermistor is and the current in the circuit is . The temperature of the thermistor then changes, which causes the current to increase to . How does the temperature of the thermistor change and what is RT at the new temperature?

	temperature of thermistor	at new temperature /
A	increases	60
B	decreases	60
C	increases	100
D	decreases	100

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