Question

A d.c. circuit can be represented by a voltage source of 10 V in series with an output resistance of 1 k ohm. An ammeter of 50 ohm resistance is connected to the source terminals for measurement of current. what will be the accuracy of measurement?

Answer 1

I=V/(Ro+Ra) = 10/(1k+0.05k) = 9.5238 mA.
= Measured current.

I=10/1k = 10.00 mA=Theoretical current.

Accuracy = ((10.00 - 9.5238)/10)*100%4.762 %.