Sample problems
Topic: Mesh analysis
Statement of problem
(a) Use the mesh current method to solve for
i
Δ
in the circuit in the figure below.
+

8mA
980
Ω
1.8
k
Ω
4.7
k
Ω
3.3
k
Ω
i
Δ
200
i
Δ
(b) Find the power delivered by the independent current source.
(c) Find the power delivered by the dependent voltage source.
Solution
(a) The definition of mesh currents is shown in the figure below.
+

8mA
i
v
+
−
Since the current in the left mesh is known already (8mA), there is only one mesh current
equation, the equation for the right mesh.
3.3
(
8
) 1.8
200 (
8
)
4.7
0
ki
m
A
k
i
i
m
A
k
i
Ω× −
+
Ω× +
× −
+
Ω× =
The current in the right mesh is
2.8
im
A
=
Therefore the unknown current is
8
5.2
i
i
mA
mA
Δ
=
−=
−
The minus sign means the direction of current is opposite to the reference.
(b) The power delivered by the independent current source is equal to the product of its
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '05
 Unknown
 Electrical Engineering, Mesh Analysis, 4.7 k, 3.3k, 4.7k, 1.8k, 2.912mW

Click to edit the document details