Assume the resistor in the variable branch of the bridge
Chapter 5, Problem 5.53(choose chapter or problem)
Assume the resistor in the variable branch of the bridge circuit in Fig. P5.50 is R - R instead of R + R a) What is the expression for v if R << R ? b) What is the expression for the percent error in v as a function of R, Rf , and R ? c) Assume the resistance in the variable arm of the bridge circuit in Fig. P5.50 is 9810 and the values of R, Rf, and Vin are the same as in 5.50(b). What is the approximate value of Vo ? d) What is the percent error in the approximation of v when the variable arm resistance is 9810 ?
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