FULL SCREEN PRINTER VERSION EBACK Chapter 26, Problem 013 NEXT correct. x How lo
ID: 3164080 • Letter: F
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FULL SCREEN PRINTER VERSION EBACK Chapter 26, Problem 013 NEXT correct. x How long does it take electrons a car battery to the starting motor? Assume the current is 350 A and the electrons to get from carriers travel through a copper wire with cross-sectional area cm2 and 0.940 The number of charge per unit volume is 8.49 x 1020 m Number 0.001169701809 m/s the tolerance is +/-5% SHOW HINT GO TUTORIAL LINK TO TEXT LINK TO SAMPLE PROBLEM LINK TO SAMPLE PROBLEM VIDEO MINI-LECTURE VIDEO MINI LECTURE By accessing this Question Assistance, you will learn while you earn points based on the point potential Policy set by your instructor. suBMIT ANSWER SAVE FOR LATER Question Attenpts: 2 of 4 used You have surpassed the number of attempts to earn Maximum Points for this question. For this attempt, and any subsequent attempt(s), you will earn points according to the Point Potential policy set by your instructor. version 4.22.2.9 Priy 20aa 2217 labn Miler sense Inca All Rights d, A Division of lehnuniex s sens lac ReserveExplanation / Answer
here,
current , I = 350 A
cross sectional area = 0.22 cm^2 = 2.2 * 10^-5 m^2
length , l = 0.94 m
the number of charge carriers per unit volume , n = 8.49 * 10^28 m^-3
the drift velocity , vd = I /( n * Area * q)
vd = 350 /( 8.49 * 10^28 * 2.2 * 10^-5 * 1.6 * 10^-19)
vd = 1.17 * 10^-3 m/s
the time taken , t = l /vd
t = 0.94 /( 1.17 * 10^-3 )
t = 8.03 * 10^2 s
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