Solved: In the Wheatstone bridge circuit shown in Fig. 3.26, the ratio can be set to the
Chapter 3, Problem 3.54(choose chapter or problem)
In the Wheatstone bridge circuit shown in Fig. 3.26, the ratio \(R_{2} / R_{1}\) can be set to the following values: 0.001, 0.01, 0.1, 1, 10, 100, and 1000. The resistor \(R_{3}\) can be varied from \(1 \text { to } 11,110 \ \Omega\), in increments of \(1 \ \Omega\). An unknown resistor is known to lie between \(4 \text { and } 5 \ \Omega\). What should be the setting of the \(R_{2} / R_{1}\) ratio so that the unknown resistor can be measured to four significant figures?
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