a) Using the circuit in the figure, the experimenter R1 calculates the internal resistance Rx of the structure "X" as "U/l" (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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a) Using the circuit in the figure, the experimenter
RA
R1
R2
calculates the internal resistance Rx of the structure "X" as
A
"U/I" (U and I: Readings of the instruments). Express the
method error (either absolute or relative) in this calculation
in terms of given.
Rx
V
R3
Ry
b) The resistance R of a resistor is determined as "R=U/l". 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)
Transcribed Image Text:a) Using the circuit in the figure, the experimenter RA R1 R2 calculates the internal resistance Rx of the structure "X" as A "U/I" (U and I: Readings of the instruments). Express the method error (either absolute or relative) in this calculation in terms of given. Rx V R3 Ry b) The resistance R of a resistor is determined as "R=U/l". 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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