In the circuit shown in Fig. P7.26, both switches operate together; that is, they either

Chapter 7, Problem 7.26

(choose chapter or problem)

In the circuit shown in Fig. P7.26, both switches operate together; that is, they either open or close at the same time. The switches are closed a long time before opening at t = 0.

a) How many microjoules of energy have been dissipated in the \(12 \ \mathrm{k} \Omega\) resistor 12 ms after the switches open?

b) How long does it take to dissipate 75% of the initially stored energy?

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