P 7.7-2 Find the voltage v(t) for the circuit of Figure P 7.7-2

Answer:

Figure P 7.7-2

To find v(t) we need to do a voltage walk around a loop. Use the left loop and the voltage walk gives us:

We get the voltages across the inductors by

So for the 4 mH inductor, the current is the total current so

Now since the two other 4 mH inductors are in series, they are effectively an 8 mH inductor in parallel with another 8 mH inductor, so the current is divided in half. So

Note Provided Answer has wrong units. It should be V not mV

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This page last updated on April 13, 2019