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Questions and Answers
What is the equation to calculate the resistance of the thermistor using Ohm's Law?
What is the equation to calculate the resistance of the thermistor using Ohm's Law?
- $R = \frac{V}{I}$ (correct)
- $R = VI$
- $R = V - I$
- $R = \frac{I}{V}$
In the thermistor circuit, where is the voltmeter wired?
In the thermistor circuit, where is the voltmeter wired?
- In series with the variable resistor
- In parallel with the ammeter
- In parallel with the thermistor (correct)
- In series with the thermistor
What does the ammeter measure in the thermistor circuit?
What does the ammeter measure in the thermistor circuit?
- Current (I) in amps (A) (correct)
- Resistance (R) in ohms (Ω)
- Power (P) in watts (W)
- Voltage (V) in volts (V)
How can you vary the temperature of the thermistor resistor in the experiment?
How can you vary the temperature of the thermistor resistor in the experiment?
What range of temperatures does the text recommend for making measurements with the thermistor?
What range of temperatures does the text recommend for making measurements with the thermistor?
What is the equation used to calculate the resistance of the thermistor using Ohm's Law?
What is the equation used to calculate the resistance of the thermistor using Ohm's Law?
Where is the voltmeter wired in the thermistor circuit?
Where is the voltmeter wired in the thermistor circuit?
What does the ammeter measure in the thermistor circuit?
What does the ammeter measure in the thermistor circuit?
How can you vary the temperature of the thermistor resistor in the experiment?
How can you vary the temperature of the thermistor resistor in the experiment?
What range of temperatures does the text recommend for making measurements with the thermistor?
What range of temperatures does the text recommend for making measurements with the thermistor?
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Study Notes
Thermistor Circuit and Measurement
- Ohm's Law is used to calculate the resistance of the thermistor with the equation: ( R = \frac{V}{I} ), where ( R ) is resistance, ( V ) is voltage across the thermistor, and ( I ) is the current through it.
- In the thermistor circuit, the voltmeter is wired across the thermistor to measure the voltage drop across it.
- The ammeter measures the current flowing through the thermistor circuit, providing insight into the electrical flow and allowing resistance calculation.
Temperature Variation and Measurement Range
- Temperature of the thermistor resistor can be varied by placing it in different environments, such as ice water, boiling water, or room temperature settings.
- Recommended temperature range for making measurements with the thermistor typically spans from -20°C to 100°C, allowing for diverse experimental conditions and data collection.
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