Question 1a) Ina closed circuit, an electric current of intensity i goes through a resistor ofresistance R. The electric potential at the edges of R is measured to be V. Ifnow we writeRwould this generally bethe definition ofthe resistance quantity R, or theexpression of Ohm's Law? Explain.b) We define the resistivity (via the familiar notation) asE「了,Thus show that the resistance R can be written as,R =p!Ahere Lis the length ofthe resistor, and A is the cross-sectional area ofit.c) Let J the curent density (i/A). Express J in tems of the electron density n(electrons/m'), the electron drift velocity va, and the electron charge e.

(a)In a closed circuit, an electric current of intensity (i) goes through a resistor of resistance…

Answered: na closed сп it, an electh current of…

na closed сп it, an electh current of intensity i goes thro esistance R. The electric potential at the edges of Ris meas now we write vould this generally bethe definition ofthe resistance quan

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.75AP: Review. When a straight wire is warmed, its resistance is given by R = R0,[1 + a(T T0)] according...

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