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

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter18: Direct-Current Circuits

Section: Chapter Questions

Problem 18P: (a) Find the current in each resistor of Figure P18.18 by using the rules for resistors in series...

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