Fundamentals of Electric Circuits

Problems 121
3.47 Rework Prob. 3.19 using mesh analysis.
3.48 Determine the current through the 10-k
the circuit of Fig. 3.93 using mesh analysis.
3 kΩ
4 kΩ 2 kΩ 5 kΩ
1 kΩ
12 V
+
− 10 kΩ
+ −
+
−
8 V
Figure 3.93
For Prob. 3.48.
3.49 Find v o and i o in the circuit of Fig. 3.94.
3 Ω
1 Ω v o 2 Ω
i o
v o
8 Ω
i 2 ,
i
3 A
i 4 Ω
+ 3 −
2v o
Fig. 3.96.
resistor in
5 A
2 Ω v o
1 Ω
4 Ω + − 20 V
40 V + −
6 V Figure 3.96
For Prob. 3.51.
3.52 Use mesh analysis to find i 1 , and i 3 in the circuit
of Fig. 3.97.
+
2
v o 2 Ω
8 Ω
−
12 V + − i 1
16 V
2 Ω 2i + o −
Figure 3.97
For Prob. 3.52.
Figure 3.94
For Prob. 3.49.
3.53 Find the mesh currents in the circuit of Fig. 3.98
using MATLAB.
3.50 Use mesh analysis to find the current i o in the circuit
of Fig. 3.95.
2 kΩ
I 5
6 kΩ 8 kΩ
i o
I 3 8 kΩ I 4
3 mA
4 Ω
60 V + −
10 Ω
2 Ω
3i o
8 Ω
12 V + −
1 kΩ 4 kΩ
I 1
3 kΩ
I 2
Figure 3.95
For Prob. 3.50.
Figure 3.98
For Prob. 3.53.