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Uncertainty in ammeter and voltmeter?

  1. May 4, 2015 #1


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    I set an ohm meter to record current in mA, smallest 0.01mA, I took three readings for several different resistances.. What would the uncertainty be?

    And the same for the voltmeter but reading in volts, smallest 0.01V
  2. jcsd
  3. May 4, 2015 #2


    Staff: Mentor

    It depends on the accuracy of your instrument. By the way, ohm meters measure ohms, not amps.
  4. May 4, 2015 #3


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    Multimeter sorry! Isn't the accuracy half the smallest division?
  5. May 4, 2015 #4


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    Gold Member
    2017 Award

    It could be but not necessarily. The scale could be far from linear. Accuracy, Discrimination Precision are all very different things.
  6. May 4, 2015 #5
    Try to find the specifications for your multimeter (possibly in the owner's manual). It should list the accuracy for each scale.
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