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If upon initial null balance r3 is 1275 ohms and if when r2

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A simple wheatstone bridge as shown in fig. 7.10 is used to determine accurately the value of an unknown resistance R1 located in leg 1. If upon initial null balance R3 is 127.5 ohms and if, when R2 and R4 are interchanged, the null balance is achieved when R3 is 157.9 ohms, what is the value of the unknown resistance R1?

Reference no: EM13603906

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