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ECE 231 HW-8 Solution Set

# ECE 231 HW-8 Solution Set - ECE-231 Circuits and Systems I...

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ECE-231 Circuits and Systems I Spring 2011 HW Set #8 Professor Stewart Personick ECEC-321 [email protected]

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Instructions Send your solution set, via E-mail, to: [email protected] The “subject” of your E-mail must be : ECE 231 HW#8 (your last name) Your solution set must be in the form of an attachment. I.e. a Microsoft Office file (.doc, .docx, .xls, .xlsx, .ppt, .pptx) or a legible scan of a handwritten file. Your solution set must be sent to me by the deadline: Sunday, March 13, 8 p.m. Eastern time. [Drafts will be accepted for
Problem #1 is= 1,000A R1 = 0.01 a b Both switches are closed for all times: t<0 seconds. At time t= -1 second, the current i(t) = 0. Switch A opens at time: t=0 seconds, and remains open thereafter. At time: t=2 seconds, the switch B opens ; and remains open thereafter. Calculate and plot (on graphs that are neatly drawn) the current i(t), and the voltage Vab(t), as a function of time, for values of time between: t=-1 second and t= 5 seconds. How much energy (Joules) is stored in the inductor at each of the following times: t=-0.000001 second, t=+.000001 second, t= 2 seconds, t= 5 seconds L= .005H R2 =0.01 a b t< 0s i(t)= 0A i(t) Switch B Switch A 1,000A 1,000A Vab(t)= 0V

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Problem #1 is= 1,000A R1 = 0.01 a b Both switches are closed for all times: t<0 seconds. At time t= -1 second, the current i(t) = 0. Switch A opens
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