How should an ideal voltmeter be connected to measure the pd across a component?
Answer and explanation
Correct answer: D. In parallel with the component, with a very high resistance
- Step 1: The voltmeter must share the component's pd, so it goes in parallel. Step 2. A high resistance means it draws almost no current and does not alter the circuit. Answer: In parallel with the component, with a very high resistance. Why not the others: series connection is for ammeters; a low-resistance parallel voltmeter would divert current from the component.
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