Another example of Nodal analysis with voltage source

 Nodal analysis with voltage source

Example 1:

Determine Ib in the circuit in Fig. 3.58 using nodal analysis.



Let V1 be the unknown node voltage to the right of the 250-Ω resistor. Let the ground
reference be placed at the bottom of the 50-Ω resistor.



But Substituting this into the nodal equation leads to
Thus,

Example 2:

Find Vo and the power dissipated in all the resistors in the circuit of Fig. 3.60.

At the top node, KVL gives