A Wheatstone bridge is a type of bridge circuit used to make measurements of resistance
Chapter 19, Problem 19.74(choose chapter or problem)
A Wheatstone bridge is a type of bridge circuit used to make measurements of resistance. The unknown resistance to be measured, is placed in the circuit with accurately known resistances and (Fig. 1976). One of these, is a variable resistor which is adjusted so that when the switch is closed momentarily, the ammeter shows zero current flow. The bridge is then said to be balanced. (a) Determine in terms of and (b) If a Wheatstone bridge is balanced when and what is the value of the unknown resistance?
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