Premium practical diagram for resistance of a thermistor with temperature.
Why this practical matters
These experiments link current, potential difference, resistance, and energy in a clear lab circuit.
A thermistor does the opposite of a metal, which is a favourite exam comparison.
What You Need
Apparatus
- power supply or cells
- ammeter and voltmeter
- variable resistor
- resistor, wire, thermistor, or bulb
- thermistor probe
Key Formula
thermistor resistance falls as temperature rises
Say the formula out loud before you start the calculation. It helps students and examiners follow your logic.
How To Do It
- Set up the resistance of a thermistor with temperature apparatus neatly and make sure the scale or meter reading starts from a known point.
- Build the circuit neatly, check the meter polarity, vary one quantity at a time, and plot a graph where needed.
- Use the result to explain the physics idea in simple English. A thermistor does the opposite of a metal, which is a favourite exam comparison.
Simple Explanation
A thermistor does the opposite of a metal, which is a favourite exam comparison.
In the lab, we are not just collecting numbers. We are showing a physics rule in a real and reliable way. That is why careful setup, repeat readings, and clear labelling matter so much.
Common Mistakes
- Putting the voltmeter in series.
- Forgetting to switch off before changing the circuit.
- Using too high a current and heating the component too much.
Exam Tips
- Say which meter goes in series and which goes in parallel.
- Describe the graph shape, not only the readings.
- Mention why the circuit must be kept cool when needed.
- State the observation, the method, and the conclusion in that order.
Simulator / Quick Check
Resistance of a Thermistor with Temperature simulator
Enter values and press Run.