8/5/13
Solution
Solution
First, define a mesh current arround each mesh (window pane) of the circuit. Define each one in a clockwise
direction.
Now write KVL equations for each loop. On the first loop, we run into a problem. We do not know the
voltage acr

8/5/13
Solution
Solution
First, select a reference node and label the other nodes. Since each node has the same number of connected
branches (4), we'll simply choose the bottom node as the reference. There are only two other nodes, which
we will label V1

8/5/13
Solution
Solution
First, select a reference node and label the other nodes. All the nodes have three connected branches, so we
will simply choose the bottom node as the reference.
Now write KCL equations for each node except the reference, in terms

8/5/13
Solution
Solution
First, label each mesh (window pane) with a mesh current. For consistency, make each mesh in a clock- wise
direction.
Now write KVL equations for each loop.
KVL for i1:
- 18V + 5(i1- i2) + 4(i1- i3) + 1(i1) = 0
then gather terms:

4.16 Find the Thevenin equivalent circuit with respect to the terminals a,b for the circuit
shown.
Solution:
To find RTh, replace the 72 V source with a short circuit:
Note that the 5 and 20 resistors are in parallel, with an equivalent resistance of 520