Find the current passing through the voltage source:
a)
b)
Solution
a) The voltage source is in series with the current source. Since by definition a current source keeps the current passing through itself constant and the voltage source is in series with the current source, it should have the same current 
.
(more…)
Find voltages across the current sources.
a)
b)
c)
d)
e)
Solution
In each case, the current source is parallel with a voltage source. Therefore, the voltage across the current source is equal to the voltage of the voltage source, regardless of other elements.
(more…)
Determine the power of 
and 
. (Hint: there is no need to use nodal analysis; voltages between nodes can be easily found by the voltage sources.)
Solution
(more…)
Solve the circuit using nodal analysis and determine the power of 
.
Solution
I. Identify all nodes in the circuit. The circuit contains 3 nodes, as illustrated below.
Let’s use nodal analysis to solve this circuit and determine 
.
Solution
I. Identify all nodes in the circuit. There are four nodes in the circuit, as indicated below
Find the power of 
using circuit reduction methods.
Solution
and 
are parallel. 
and 
are also parallel. Therefore:
(more…)
Solve the circuit using nodal analysis and find the power of .
Solution
a) Choose a reference node, label the voltages:
(more…)
Find 
(Hint: use circuit reduction).
All resistors are 
and 
Solution
Let’s redraw the circuit:
(more…)
Find 
using single node-pair analysis (do not reduce the circuit).
and 
.
Solution
a) Redraw the circuit if necessary. Mark the voltage across nodes:
Find 
using single loop analysis (do not reduce the circuit).
and .
Solution
a) Choose loop current: