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Which of the following is not an integrating instrument?

  • Voltmeter is not an integrating instrument.
  • An integrating instrument is one that records the totalized events over a specified period of time.
  • These instruments are used to measure the total amount of a physical quantity that has accumulated over a period of time. Examples of integrating instruments include ampere-hour meters and watt-hour meters.
  • An ampere-hour meter is an integrating instrument used to measure the total amount of electrical charge that has been consumed in a circuit over a specified period of time.
  • It works by integrating the product of time and the current flowing through the circuit. The resulting value is measured in ampere-hours, which represents the total amount of charge that has been consumed.
  • Similarly, a watt-hour meter is an integrating instrument used to measure the total amount of electrical energy that has been consumed in a circuit over a specified period of time.
  • It integrates the product of time and the power (voltage multiplied by current) consumed by the circuit. The resulting value is measured in watt-hours, which represents the total amount of energy that has been consumed.
  • On the other hand, a voltmeter is an instrument used to measure the voltage difference between two points in a circuit.
  • It is not an integrating instrument as it only measures the instantaneous value of the voltage at a particular moment in time. It does not record the total amount of voltage that has accumulated over a period of time.