A student sets up an experiment to measure the potential difference (voltage) across a filament lamp. She changes the current through the lamp. The diagram shows the circuit she used. Complete the sentences by putting a cross (X) in the box next to your answer. (i) The component X in the circuit diagram is a A diode B fixed resistor C thermistor D variable resistor (ii) The meter that measures potential difference is A in parallel with the power supply B in parallel with the lamp C in series with the lamp D in series with the component X

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A student sets up an experiment to measure the potential difference (voltage) across a filament lamp - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1

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A student sets up an experiment to measure the potential difference (voltage) across a filament lamp. She changes the current through the lamp. The diagram shows t... show full transcript

Worked Solution & Example Answer:A student sets up an experiment to measure the potential difference (voltage) across a filament lamp - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1

Step 1

The component X in the circuit diagram is a

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Answer

In the given circuit diagram, component X is likely a variable resistor (D). This is because variable resistors are often used to adjust current or voltage in circuits, particularly in experiments measuring potential difference.

Step 2

The meter that measures potential difference is

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Answer

The appropriate configuration for measuring potential difference is to place the meter in parallel with the lamp (B). This allows the voltmeter to accurately measure the voltage across the filament lamp without affecting the total current in the circuit.

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A student sets up an experiment to measure the potential difference (voltage) across a filament lamp - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1

Worked Solution & Example Answer:A student sets up an experiment to measure the potential difference (voltage) across a filament lamp - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1

The component X in the circuit diagram is a

The meter that measures potential difference is

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