Question

1 The NTC-type thermistor (NTC- negative thermal coefficient) has the characteristic curve shown below. Resistance (??) 8- 7- 6- 5- 4- 3- 2- 1- 0 10 20 30 40 50 60 70 80 90 Temperature (°C) (a) What is the temperature when the resistance of the thermistor is 5 ??? (b) What is the resistance of the thermistor when the temperature is 80°C? (c) Determine the value of the variable resistor that gives an output voltage of 3.0 V when the temperature is 80°C. [Ans: 2000 ?] Resistance = (c) What happens to the value of the output voltage as the temperature falls and the variable resistor remains at a fixed value? Explain your answer.

          1 The NTC-type thermistor (NTC- negative thermal coefficient) has the characteristic curve shown below.
Resistance (??)
8-
7-
6-
5-
4-
3-
2-
1-
0
10 20 30 40 50 60 70 80 90
Temperature (°C)
(a) What is the temperature when the resistance of the thermistor is 5 ???
(b) What is the resistance of the thermistor when the temperature is 80°C?
(c) Determine the value of the variable resistor that gives an output voltage of 3.0 V when the
temperature is 80°C.
[Ans: 2000 ?]
Resistance =
(c) What happens to the value of the output voltage as the temperature falls and the
variable resistor remains at a fixed value? Explain your answer.

1 The NTC-type thermistor (NTC- negative thermal coefficient) has the characteristic curve shown below.
Resistance (??)
8-
7-
6-
5-
4-
3-
2-
1-
0
10 20 30 40 50 60 70 80 90
Temperature (°C)
(a) What is the temperature when the resistance of the thermistor is 5 ???
(b) What is the resistance of the thermistor when the temperature is 80°C?
(c) Determine the value of the variable resistor that gives an output voltage of 3.0 V when the
temperature is 80°C.
[Ans: 2000 ?]
Resistance =
(c) What happens to the value of the output voltage as the temperature falls and the
variable resistor remains at a fixed value? Explain your answer.

Added by Esther S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Supratim Pal

02/11/2022

Step 1

From the curve, we can see that this point is between 30°C and 40°C. Show more…

Show all steps

Thanks for your feedback!

The NTC-type thermistor (NTC- negative thermal coefficient) has the characteristic curve shown below. a) What is the temperature when the resistance of the thermistor is 5 kOmega Rho (b) What is the resistance of the thermistor when the temperature is 80deg C? (c) Determine the value of the variable resistor that gives an output voltage of 3.0 V when the temperature is 80deg C. 8 7 4 3 2 - 10 20 30 40 50 60 70 80 90 Temperature(C) (a) What is the temperature when the resistance of the thermistor is 5 k? (b) What is the resistance of the thermistor when the temperature is 80c? (c) Determine the value of the variable resistor that gives an output voltage of 3.0 V when the [Ans:2000] temperature is80C. Resistance= (c) What happens to the value of the output voltage as the temperature falls and the variable resistor remains at a fixed value? Explain your answer.