A student sets up an experiment to measure the potential difference (voltage) across a filament lamp - Edexcel - GCSE Physics - Question 3 - 2013 - Paper 1
Question 3
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
The component X in the circuit diagram is a variable resistor (D). A variable resistor allows for the adjustment of current flowing through the circuit, making it suitable for measuring the potential difference across the filament lamp.
Step 2
The meter that measures potential difference is
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Answer
The meter that measures potential difference is in parallel with the lamp (B). This configuration ensures that the voltage across the filament lamp can be accurately measured without affecting the current flow through it.
