0195136047.pdf

PROBLEMS 59

1.2.24Determine the equivalent capacitance at terminals
A–Bfor the circuit configurations shown in Figure
P1.2.24.

1.2.25For the circuit shown in Figure P1.2.25, sketchi(t)
andw(t). See Problem 1.2.21 and check whether
the duality principle is satisfied.

1.2.26For the circuit given in Figure P1.2.26, sketchv(t)

andw(t). See Problem 1.2.20 and check whether

the duality principle is satisfied.

*1.2.27The energy stored in a 2-μH inductor is given by

wL(t)= 9 e−^2 tμJ fort≥0. Find the inductor

current and voltage att=1 s. Compare the results

of this problem with those of Problem 1.2.22 and

comment.

6 μF

A

B

5 μF

(a)

1 μF

10 pF

10 pF

10 pF

10 pF

A

B

A B

(b)

2 μF

2 μF

3 μF

3 μF

5 μF

2 μF

3 μF

(c)

Figure P1.2.24

− 1

− 3

− 6

3

123

+

−

v(t), mV

i(t)

v(t) L = 3 μH t, μs

45

Figure P1.2.25