A 25-mH inductor is connected in series with a 20-? resistor through a 20-V dc power supply and a switch. If the switch is closed at t = 0 s, what is the current when t = 2.0 ms?
Added by Jean S.
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At t = 0, the switch is closed, so the circuit is closed and the current starts to flow. We can assume that the current at t = 0 is 0 A, since there is no initial charge on the inductor. Show more…
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