A voltmeter is used to measure potential difference for a component X - AQA - A-Level Physics - Question 28 - 2018 - Paper 1
Question 28
A voltmeter is used to measure potential difference for a component X.
Which row gives the position and ideal resistance for the voltmeter?
Worked Solution & Example Answer:A voltmeter is used to measure potential difference for a component X - AQA - A-Level Physics - Question 28 - 2018 - Paper 1
Step 1
Position: in parallel with X
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Answer
A voltmeter should be connected in parallel with the component to measure the potential difference across it.
Step 2
Ideal resistance: infinite
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Answer
The ideal resistance of a voltmeter is infinite to ensure that it does not draw any current from the circuit, thus not affecting the measurement.
