7.6 The two switches in the circuit seen in Fig. P7.6 are synchronized. The switches have been closed for a long time before opening at t = 0. a) How many microseconds after the switches are open is the energy dissipated in the 4 kn resis- tor 10% of the initial energy stored in the 6 H inductor? b) At the time calculated in (a), what percentage of the total energy stored in the inductor has been dissipated? Figure P7.6 1=0, 1105 mA 1 kn 6 H 4 ΚΩ t=0, • 20 ΚΩ Σ 80 ΚΩ

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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7.6 The two switches in the circuit seen in Fig. P7.6 are
synchronized. The switches have been closed for a
long time before opening at t = 0.
a) How many microseconds after the switches are
open is the energy dissipated in the 4 kn resis-
tor 10% of the initial energy stored in the 6 H
inductor?
b) At the time calculated in (a), what percentage of
the total energy stored in the inductor has been
dissipated?
Figure P7.6
t=0.
105 mA 1 kn
6 H
4 ΚΩ
t=0,
20 ΚΩ
80 ΚΩ
Transcribed Image Text:7.6 The two switches in the circuit seen in Fig. P7.6 are synchronized. The switches have been closed for a long time before opening at t = 0. a) How many microseconds after the switches are open is the energy dissipated in the 4 kn resis- tor 10% of the initial energy stored in the 6 H inductor? b) At the time calculated in (a), what percentage of the total energy stored in the inductor has been dissipated? Figure P7.6 t=0. 105 mA 1 kn 6 H 4 ΚΩ t=0, 20 ΚΩ 80 ΚΩ
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