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In the given image, determine the voltage and the voltage polarity across R2 just after the switch S1 is opened. Steady state conditions have occurred in the circuit just before switch S1 is opened.

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In the given image, determine the voltage and the voltage polarity across R2 just after the switch S1 is opened. Steady state conditions have occurred in the circuit just before switch S1 is opened.
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Answered Same Day Dec 29, 2021

Solution

David answered on Dec 29 2021
113 Votes
Solution:
Before switch is open:
Cu
ent I = 12/120= 100 mA
Just after switch S1 is opened. Cu
ent path through R1
eaks but cu
ent through inductor can’t
change instantaneouly so Cu
ent I will continue to flow in the direction shown. So the only obvious
path for the cu
ent is...
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