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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
In the circuit in Fig. P7.10, let
 represent the dc current source, represent the fraction of initial energy stored in the inductor that is dissipated in
 seconds, and L represent the inductance.
a) Show that

b) Test the expression derived in (a) by using it to find the value of R in Problem 7.10.
Problem 7.10
The switch in the circuit seen in Fig. P7.10 has been in position 1 for a long time. At t = 0, the switch moves instantaneously to position 2. Find the value of R so that of the initial energy stored in the 10 mH inductor is dissipated in R in 10 μs.

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