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Lecture16 - Two Identical Light Bulbs in Series i = nAuE =...

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1 L V nAu nAuE i Δ = = L L i i 2 1 2 > Electron mobility in metals decreases as temperature increases! Conversely, electron mobility in metals increases as temperature decreases. Thus, the current in the 2-bulb circuit is slightly more than that in the one-bulb circuit. Two Identical Light Bulbs in Series Identical light bulbs Two identical light bulbs in series are the same as one light bulb with twice as long a filament. Lecture 16 Chapter 20. Capacitors, Resistors and Batteries Announcement: There will be no lectures on Monday March 28 and Wednesday March 30, 2011 to compensate for the two evening exams: Exam #1 that took place on Feb 15 th , 2011 Exam #2 that will take place on March 30 st , 2010. The capacitor in your set is similar to a large two-disk capacitor s D Capacitor: Construction and Symbols There is no connecting path through a capacitor Capacitor: Charging and Discharging Experiment 1 Experiment 2
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2 Fringe field of a capacitor rises until E =0 in a wire – static equilibrium. Fringe field opposes the flow of current!
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