The switch in the circuit shown has been closed for a long time and is opened at t = 0. Find a) b) c) the initial value of v(t), the time constant for t > 0, the numerical expression for v (t) after the switch has been opened,

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ISBN:9780133923605
Author:Robert L. Boylestad
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The switch in the circuit shown has been closed for a long time and is opened at
t = 0. Find
a)
b)
c)
d)
e)
the initial value of v(t),
the time constant for t > 0,
the numerical expression for v (t) after the switch has been opened,
the initial energy stored in the capacitor, and
the length of time required to dissipate 75% of the initially stored energy.
7.5 mA
20 ΚΩ
www
80 ΚΩ
0
0.4 μF v(t) 50 kn
=
ΚΩ
Transcribed Image Text:The switch in the circuit shown has been closed for a long time and is opened at t = 0. Find a) b) c) d) e) the initial value of v(t), the time constant for t > 0, the numerical expression for v (t) after the switch has been opened, the initial energy stored in the capacitor, and the length of time required to dissipate 75% of the initially stored energy. 7.5 mA 20 ΚΩ www 80 ΚΩ 0 0.4 μF v(t) 50 kn = ΚΩ
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