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Question:
Published on: 10 August, 2022

How can potentiometer be used for

  • Calibration of ammeter
  • Calibration of voltmeter
Answer:

Calibration of ammeter:- The ammeter to be calibrated is connected in series with a variable resistance R and a standard resistance S. The standard resistance, S should be such of magnitude that with the current to be passed through it, the voltage drop across it does not exceed the range of the potentiometer. Variable resistance is including in the circuit to vary the magnitude of current flowing through the ammeter and standard resistance S.