A voltmeter can read the correct potential difference only when the current drawn by it from the cellis
Correct answer: C. Zero
- A. Smaller
- B. Greater
- C. Zero
- D. None of these
Explanation
A voltmeter is connected in parallel to the component or portion of the circuit across which the potential difference is to be measured. Since a voltmeter is designed to have a very high resistance, ideally infinite, connecting it in parallel does not provide a path for significant current to flow through it. Therefore, the current drawn by a voltmeter from the cell should ideally be zero to avoid altering the circuit's behavior and to ensure an accurate measurement of the potential difference.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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