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The true value of the voltage across a resistor is 80 V. However, when a 0−100 V meter is employed, the measurement reading obtained is 79 V. Calculate relative error as a function of the measured value:
  • a)
    2.1%
  • b)
    1.26%
  • c)
    1.52%
  • d)
    1.78%
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The true value of the voltage across a resistor is80V. However, when a...
Relative error is same as % error.
∴ Relative error as a function of the measured value

Given data:
True voltage = 80 V
Measured voltage = 79 V
Voltmeter full scale displacement value = 100 V
∴ Relative error as a function of the measured value = (|79-80|/79) x 100%
= 1.26%
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The true value of the voltage across a resistor is80V. However, when a0−100Vmeter is employed, the measurement reading obtained is79V. Calculate relative error as a function of the measured value:a)2.1%b)1.26%c)1.52%d)1.78%Correct answer is option 'B'. Can you explain this answer?
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