276 ||| SERIES-PARALLEL CIRCUITS *7. For the network in Fig. 7.67: a. Find currents I, I, and lo h. Find voltages V, and V c. Find the power delivered to the 3 kfl resistor. E=28V3 #₁ 16 #₂340 FIG. 7.67 Problem 7. N₂ W 9k0 R₂ 630 410440

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276 ||| SERIES-PARALLEL CIRCUITS
*7. For the network in Fig. 7.67:
a. Find currents I, I, and l
b. Find voltages V, and V
c. Find the power delivered to the 3 kfl resistor
*& For the series-parallel configuration in Fig. 7.68
a. Find the source current ,
b. Find currents, and/
e. Find current l
d. Find voltage V
R₁1052 80 V
=
R₂
W
50
+20 V 50
592
w
4
R. 3802
ww
601
R₁4 R₁80 R, 212
+
FIG. 7.68
Problem 8.
FIG. 7.69
Problem 9.
9. Determine the currents /, and I, for the network in Fig. 7.69.
16 1
R₂
W
www
250
12. For the network in Fig. 7.72:
a. Determine the current 7.
b. Calculate the currents I, and 1₂.
e. Determine the voltage levels V, and V
8 20V
M
8,30
[+
R₂30
R, GURGU
FIG. 7.72
Problem 12.
48 V
E = 28 V
TOV
R₂40
-79
R₂
*13. Determine the de levels for the transistor network in Fig.
7.73 using the fact that Vas-0.7 V, V-2V, and Ic - Ig
That is
a. Determine I, and lo
-1k0
114
41242²
FIG. 7.66
Problem 6
FIG. 7.67
Problem 7.
R, 401
1₁
ly
4,340
R₂
10. a. Find the magnitude and direction of the currents I. I.
and I, for the network in Fig. 7.70.
b. Indicate their direction on Fig. 7.70.
=
*, $100
R₁
A
RISE
*11. For the network in Fig. 7.71:
+24 V
FIG. 7.70
Problem 10.
1402
201
w
R₂ 201
a. Determine the currents I, I, I, and
b. Calculate V, and V
R₁100
h
Vas-1.75 V
lg = 0A
R₂
www
6k02
+ V₂ -
R₂
w
9k0
FIG. 7.71
Problem 11.
-24kf
0-8V
on
2
Ven
20V R350
*14. The network in Fig. 7.74 is the basic biasing arrangement for
the field-effect transistor (FET), a device of increasing im
portance in electronic design. (Biasing simply means the ap-
plication of de levels to establish a particular set of operating
conditions.) Even though you may be unfamiliar with the
FET, you can perform the following analysis using only the
basic laws introduced in this chapter and the information
provided on the diagram.
a. Determine the voltages V and V
b. Find the currents
and
c. Determine Ve
d. Calculate Vi
R1040
VoD 16 V
오
PROBLEMS || 277
17
Ho
R20 R25
R₁
MO
402
Vas
R₂ 270 142
=
18
||'s
R 1.50
OVS
Transcribed Image Text:276 ||| SERIES-PARALLEL CIRCUITS *7. For the network in Fig. 7.67: a. Find currents I, I, and l b. Find voltages V, and V c. Find the power delivered to the 3 kfl resistor *& For the series-parallel configuration in Fig. 7.68 a. Find the source current , b. Find currents, and/ e. Find current l d. Find voltage V R₁1052 80 V = R₂ W 50 +20 V 50 592 w 4 R. 3802 ww 601 R₁4 R₁80 R, 212 + FIG. 7.68 Problem 8. FIG. 7.69 Problem 9. 9. Determine the currents /, and I, for the network in Fig. 7.69. 16 1 R₂ W www 250 12. For the network in Fig. 7.72: a. Determine the current 7. b. Calculate the currents I, and 1₂. e. Determine the voltage levels V, and V 8 20V M 8,30 [+ R₂30 R, GURGU FIG. 7.72 Problem 12. 48 V E = 28 V TOV R₂40 -79 R₂ *13. Determine the de levels for the transistor network in Fig. 7.73 using the fact that Vas-0.7 V, V-2V, and Ic - Ig That is a. Determine I, and lo -1k0 114 41242² FIG. 7.66 Problem 6 FIG. 7.67 Problem 7. R, 401 1₁ ly 4,340 R₂ 10. a. Find the magnitude and direction of the currents I. I. and I, for the network in Fig. 7.70. b. Indicate their direction on Fig. 7.70. = *, $100 R₁ A RISE *11. For the network in Fig. 7.71: +24 V FIG. 7.70 Problem 10. 1402 201 w R₂ 201 a. Determine the currents I, I, I, and b. Calculate V, and V R₁100 h Vas-1.75 V lg = 0A R₂ www 6k02 + V₂ - R₂ w 9k0 FIG. 7.71 Problem 11. -24kf 0-8V on 2 Ven 20V R350 *14. The network in Fig. 7.74 is the basic biasing arrangement for the field-effect transistor (FET), a device of increasing im portance in electronic design. (Biasing simply means the ap- plication of de levels to establish a particular set of operating conditions.) Even though you may be unfamiliar with the FET, you can perform the following analysis using only the basic laws introduced in this chapter and the information provided on the diagram. a. Determine the voltages V and V b. Find the currents and c. Determine Ve d. Calculate Vi R1040 VoD 16 V 오 PROBLEMS || 277 17 Ho R20 R25 R₁ MO 402 Vas R₂ 270 142 = 18 ||'s R 1.50 OVS
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