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In measuring resistance by voltmeter ammeter method, the voltmeter can be connected either across supply or across the resistance. If the resistance is low, the voltmeter should be connected
  • a)
    across the supply
  • b)
    across the resistance
  • c)
    either across the supply or across the resistance
  • d)
    neither across the supply nor across the resistance
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
In measuring resistance by voltmeter ammeter method, the voltmeter can...
Explanation:

Connection of voltmeter in measuring resistance:
- When measuring resistance using the voltmeter-ammeter method, the voltmeter can be connected either across the supply or across the resistance.
- The decision of where to connect the voltmeter depends on the resistance being measured.

Low resistance scenario:
- When the resistance being measured is low, it is recommended to connect the voltmeter across the resistance.
- This is because if the voltmeter is connected across the supply in this scenario, the resistance of the voltmeter itself can have a significant effect on the total resistance in the circuit.
- By connecting the voltmeter across the resistance, the impact of the voltmeter's own resistance is minimized, providing a more accurate measurement of the resistance being tested.

Correct answer:
- The correct answer to the question is option 'B' - across the resistance.
- Connecting the voltmeter across the resistance in the case of low resistance ensures a more accurate measurement without introducing additional errors due to the voltmeter's resistance.
In summary, when measuring low resistance using the voltmeter-ammeter method, it is advisable to connect the voltmeter across the resistance to minimize errors and obtain a more precise measurement.
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In measuring resistance by voltmeter ammeter method, the voltmeter can be connected either across supply or across the resistance. If the resistance is low, the voltmeter should be connecteda)across the supplyb)across the resistancec)either across the supply or across the resistanced)neither across the supply nor across the resistanceCorrect answer is option 'B'. Can you explain this answer?
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