Question

In the below circuit we put Snubbing Diode D1 across the coil to protect the transistor (represented here as a switch) from the high reverse transient voltage when the switch (transistor) is opened. Note that this represents a model of a real inductor that has a 100 ohm DC resistance. Calculate the current that will flow in D1 at t-0 L1=1mH R1=0.1k VS-10V will be open at t-0 D1

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