For the circuit below, a) Show that the unknown resistance Rx is given by Rx A R3 ww ww Ri B Rx ww Switch ww R₂, D HE R2. R₁ SYRUO R3 where R₁, R₂ and R3 are all accurately known. b) A Wheatstone bridge is balanced when R₁ = 6302, R₂ = 97202 and R3 = 42.62. What is the value of the resistance in the fourth arm?
For the circuit below, a) Show that the unknown resistance Rx is given by Rx A R3 ww ww Ri B Rx ww Switch ww R₂, D HE R2. R₁ SYRUO R3 where R₁, R₂ and R3 are all accurately known. b) A Wheatstone bridge is balanced when R₁ = 6302, R₂ = 97202 and R3 = 42.62. What is the value of the resistance in the fourth arm?
Chapter10: Direct-current Circuits
Section: Chapter Questions
Problem 55P: An ECG monitor must have an KC time constant lessthan 1.00102s to be able to measure variations...
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From the same diagram. An unknown length of platinum wire 0.920mm in diameter is placed as the unknown resistance in a wheatstone bridge (same diagram above). Arms 1, 2, and 3 have resistance of 38 ohms, and 46 ohms respectively. Balance is achieved when R3 is 3.48 ohms. How long is the platinum wire?
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