For the circuit below,a) Show that the unknown resistance Rx is given by RxAR3wwwwRiBRxwwSwitchwwR₂,DHER2.R₁SYRUOR3where 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 theresistance in the fourth arm?

Current through R1 is I1 and current through R3 is I3.

Answered: For the circuit below, a) Show that the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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?

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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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