A student investigates how the resistance of a thermistor varies with temperature. The student sets up the circuit shown in Figure 2 to measure current and voltage. He finds that it does not work. Give three modifications that the student should make to the circuit so that the circuit works correctly.

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A student investigates how the resistance of a thermistor varies with temperature - Edexcel - GCSE Physics: Combined Science - Question 2 - 2016 - Paper 1

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A student investigates how the resistance of a thermistor varies with temperature. The student sets up the circuit shown in Figure 2 to measure current and voltage.... show full transcript

Worked Solution & Example Answer:A student investigates how the resistance of a thermistor varies with temperature - Edexcel - GCSE Physics: Combined Science - Question 2 - 2016 - Paper 1

Step 1

Connect ammeter in series (with thermistor)

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Answer

The student should connect the ammeter in series with the thermistor to measure the current accurately.

Step 2

Connect voltmeter in parallel (with thermistor)

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Answer

The student should connect the voltmeter in parallel with the thermistor to measure the voltage across it properly.

Step 3

Reverse connections for one of the cells

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Answer

The student should check and reverse the connections for one of the cells to ensure the circuit is complete and functioning.

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