Download Problem 2.40 Simplify the circuit to the right of terminals (a,b) in Fig

Problem 2.40 Simplify the circuit to the right of terminals (a, b) in Fig. P2.40 to
find Req , and then determine the amount of power supplied by the voltage source. All
resistances are in ohms.
Solution:
25 V
+
_
a
Req
3
4
5
8
6
8
12
6
Figure P2.40: Circuit
for Problem 2.40.
12
b
a
25 V
+
_
Req
3
4
5
8
6
8
12
4
b
a
25 V
+
_
Req
3
4
5
8
6
6
12 || 12 = 6
8
5 + 6 || 6 = 5 + 3 = 8
b
a
25 V
+
_
Req
3
4
8
b
a
25 V
+
_
Req
3
2
8 || 8 || 4 = 2
b
Req = 3 + 2 = 5 Ω
P=
V2
(25)2
=
= 125 W.
Req
5
c
All rights reserved. Do not reproduce or distribute. 2013
National Technology and Science Press