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bachelor in business administration
Polytechnic State University Sanluis
Jan-2006 - Nov-2010
CPA
Polytechnic State University
Jan-2012 - Nov-2016
Professor
Harvard Square Academy (HS2)
Mar-2012 - Present
4.28 Use the defining law for an inductor to find the current iL(t) corresponding to the voltage shown in Figure P4.28. Sketch your result.
Â
Figure P4.24
Â

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v (t) = 0.5 - 0.5e-t/0.02
Â
Â
Â
4.25Â Â Â Â Â Â In the circuit shown in Figure P4.25, let
⎧ 0                   for −∞ t 0
Â
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⎪⎨ t                     for 0 ≤ t 1s
Â
−(t − 2)      for1s ≤ t 2s
Â
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⎩ 0                   for2s ≤ t ∞
Â
Find the energy stored in the inductor for all time.
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