Problem 41
(II) What is the total amount of energy stored in a 12-V,75-A h car battery when it is fully charged?
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Week 6 Thursday, September 29, 2016 11:13 AM If there is no EF inside conducting material, e-'s move randomly If field is present, e- force F=-eE imposes small drift on e-'s motion Zig-zag line represent motion of charge carrier in conductor ○ Avg speed: ○ Drift speed: (much smaller) ○ Current (I) is opp dir of net displacement of e-'s Macroscopic currents can be related to motion of microscopic charge carriers making up the current ○ Current depends on: avg drift speed of charge carriers in the dir of the current # of charge carriers per unit volume Size of charge carried by each ○ Consider identically char
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Chapter 25, Problem 41 is Solved
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