The electric circuit shown below is designed to measure the temperature of the gas in a chamber.
The resistor R represents a temperature sensor enclosed in the chamber. The resistance R, in Ω, is related to the temperature T, in °C, by the equation
In this device, assume R0 = 100 Ω and k = 0.5. The voltmeter displays the value of the voltage, Vm, across the sensor. This voltage Vm indicates the temperature, T, of the gas according to the equation
Suppose the voltmeter voltage is constrained to the range Vmin = 12 volts ≤ Vm <, Vmax = 18 volts. Write a
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