Ammeter vs Voltmeter: Error Comparison

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    Ammeter Voltmeter
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SUMMARY

The discussion focuses on the comparative error contributions of ammeters and voltmeters when measuring voltage and current in circuits with varying resistances. It highlights that systematic errors arise from the impedance of the measuring instruments, specifically the voltmeter's and ammeter's impedance. The conversation emphasizes the importance of circuit configuration—whether in series or parallel—and the necessity of knowing specific resistance values to determine the optimal connection method for minimizing measurement errors.

PREREQUISITES
  • Understanding of circuit theory, including series and parallel configurations.
  • Knowledge of ammeter and voltmeter operation and their respective impedances.
  • Familiarity with systematic errors in electrical measurements.
  • Basic proficiency in interpreting circuit diagrams.
NEXT STEPS
  • Research the impedance characteristics of common ammeters and voltmeters.
  • Learn about minimizing measurement errors in electrical circuits.
  • Study the impact of circuit configuration on measurement accuracy.
  • Explore advanced circuit analysis techniques, including the use of circuit diagrams.
USEFUL FOR

Electrical engineering students, lab technicians, and anyone involved in circuit design and measurement accuracy in electrical systems.

lexylouloo
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Which one contributes more error when performing a lab calculating the voltage and current through different ohms of resistance? One was in parallel, the others in series and the last one both in series and parallel.
They are systematic errors, but not sure which one would contribute more error?
thanks :) really confused on this circuit stuff
 
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It's almost impossible to give an answer without knowing some numbers.
What's the voltmeter's impedance?
What's the ammeter's impedance?
Do you know something about the value of R?

These numbers let us decide whether to use the "short" or "long" connections to minimize instruments' influence
 
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Likes   Reactions: davenn
Circuit diagrams are always the better way to convey such questions.
 

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