Using the circuit in the figure, the experimenter calculates the internal resistance Rx of the structure “X” as “U/I” (U and I: Readings of the instruments). Express the method error (either absolute or relative) in this calculation in terms of given.
Using the circuit in the figure, the experimenter calculates the internal resistance Rx of the structure “X” as “U/I” (U and I: Readings of the instruments). Express the method error (either absolute or relative) in this calculation in terms of given.
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Question
Using the circuit in the figure, the experimenter
calculates the internal resistance Rx of the structure “X” as
“U/I” (U and I: Readings of the instruments). Express the
method error (either absolute or relative) in this calculation
in terms of given.
Transcribed Image Text:a) Using the circuit in the figure, the experimenter
RA
R1
R2
calculates the internal resistance R. of the structure "X" as
A
"U/" (U and I: Readings of the instruments). Express the
Rx
method error (either absolute or relative) in this calculation
in terms of given.
R3
I RVI
b) The resistance R of a resistor is determined as "R=U/I". Here, U is calculated from the reading of a V-
meter (nominal voltage: Un, class: 0.5) observing a deflection of 1/3 rd of the full scale. Similarly, I is
calculated by observing half-scale deflection on an A-m. What is the class of the A-m if the highest
possible value for the instrumental error in resistance calculation is found as 2.5% ? (Give sufficient detail
of your calculation)
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