文档介绍：Basic Circuit Theory
Chpter6 Problems
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1 Let L = H in -11, and determine v(t) if v(0 ) = 100 V and: (a) i C (0 ) = 20A; (b)
+
i L (0 ) = 20A.
i L i R i C +
L v
2Ω-
Fig. 6-11 For prob. 1 .
2 (a) What value of L in the circuit of -11 will result in a transient response of the form, v(t)
= Ae −4t + Be −6t ?A 4
3 Element values in the circuit of -12 are : v S = 100V, R S = 10 Ω, L = 2mH, and C =
20/3 µ F. The switch closes at t = 0, find v R (t)
4 A 4 µ F capacitor and a 10mH inductor are used in a critically damped parallel RLC circuit. (a)
Find R resistor. (b) At t = 0 the capacitor voltage is 100V and it is absorbing 50W, write the
response of the capacitor voltage versus t.
R s C L
+
-
v =0 v
s R - R
+
t
Fig. 6-12 For .
5 The switch in -13 has been closed for hours. It is opened at t = 0, show that a 10V battery
can be a lethal weapon by finding v at t = µ s.
t=0 +
v 10nF
10V -
Fig. 6-13 For .
6 For the circuit shown in -14, find v C (t) and i C (t).
20H 1200Ω
+ i C
10 +
v
20V C µF u(t)V
-
- 3 50
Fig. 6-14 For .
DaLian Maritime University
1
Basic Circuit Theory
Chpter6 Problems
7 For the circuit shown in -15, find v C (t) and i L (t).
25 Ω
+
i
L 3 − 5u(t