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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
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
Step 2
The meter that measures potential difference is
Answer
The meter that measures potential difference is in parallel with the lamp (B). This is important because a voltmeter measures the voltage drop across components, and connecting it in parallel provides an accurate reading without altering the current flow through the lamp.