- #1
captinkareem1
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The books answer is D. No clue why though
Thank you for you effort
Test Your Knowledge: Thermistor MCQ with D as the Correct Answer
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SUMMARY
The correct answer to the thermistor multiple-choice question is D, confirmed by the discussion participants. The circuit in question utilizes a voltage divider configuration with resistances R1 (a temperature variable resistor) and R2. The output voltage can be expressed using the standard voltage divider equation, which is crucial for understanding how R1's resistance varies with temperature (T) and its impact on the output voltage (V_out).
PREREQUISITES- Understanding of voltage divider circuits
- Knowledge of thermistors and their behavior
- Familiarity with Ohm's Law
- Basic circuit analysis techniques
- Study the voltage divider equation in detail
- Explore the characteristics of thermistors and their applications
- Learn about temperature coefficient of resistance
- Investigate practical applications of thermistors in temperature sensing
Electronics students, circuit designers, and engineers interested in temperature measurement and sensor applications will benefit from this discussion.
The books answer is D. No clue why though
Thank you for you effort
- #2
cepheid
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Welcome to PF captinkareem1!
It's a voltage divider, with resistances R1 and R2. The only difference from usual is that R1 is a temperature variable resistor, rather than a constant one. Can you write down an expression for the output voltage in terms of the input voltage, and the two resistances? Hint: it's a series circuit, so the same current has to flow everywhere, including through R1 and through R2. The expression you come up with should just be the standard voltage divider equation.
This will allow you to infer how R1 changes with T (does it increase or decrease) and therefore what you should do with it to get the desired dependence of V_out on T.
It's a voltage divider, with resistances R1 and R2. The only difference from usual is that R1 is a temperature variable resistor, rather than a constant one. Can you write down an expression for the output voltage in terms of the input voltage, and the two resistances? Hint: it's a series circuit, so the same current has to flow everywhere, including through R1 and through R2. The expression you come up with should just be the standard voltage divider equation.
This will allow you to infer how R1 changes with T (does it increase or decrease) and therefore what you should do with it to get the desired dependence of V_out on T.
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