Refer to Figure P2.68 and assume vS = 15 V, R1 = 12 ? , R2 = 5 ? , R3 = 8 ? , R4 = 2 ? , R5 = 4 ? , R6 = 2 ? , R7 = 1 ? , and R8 = R9 = 10 ? . Find:
a. The number of nodes in the circuit.
b. The power delivered by the source vS .
c. The equivalent resistance seen by the source vS .
Known quantities:
Circuit of Figure P2.68.
R1=12?, R2=5 ?, R3=8 ?,
R4=2 ?, R5=4 ?, R6=2 ?,
R7=1 ?, R8=R9=10 ?, vs=15V
Find:
The number of nodes in the circuit.
The power delivered by the voltage source.
The equivalent resistance seen by the voltage source.
Analysis:
Count the nodes:
Nodes=6
See nodes A, B, C, D, E, & F above
R9 is eliminated due to the short.
Start at the right and work left:
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