The heat sensitive device whose resistivity changes very rapidly with change of temperature is called a:
Correct answer: D. Thermistor
- A. Resistor
- B. Super-conductor
- C. Thermocouple
- D. Thermistor
Explanation
OPTION A:A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit.OPTION B:A superconductor is defined as a substance that offers no resistance to the electric current when it becomes colder than a critical temperature.OPTION C:Thermocouple is a temperature measuring device.It is a type of sensor used for measuring the temperature in the form of an electric current or the emf.OPTION D:Thermistor is a resistor having resistance that varies rapidly with change in temperature.Hence,option D is correct.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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