Final answer:
To perform nodal analysis on the given circuit, apply Kirchhoff's rules by writing equations at each node, and applying loop rule in the loops. Then, solve for the unknown currents.
Step-by-step explanation:
To perform nodal analysis on the given circuit, we need to apply Kirchhoff's rules. First, let's label the circuit as shown in the given figure.
Next, we will apply Kirchhoff's junction rule at each node or junction in the circuit to write the appropriate equations. At node A, we can write the equation I1 = I2 + I3.
Then, we will apply Kirchhoff's loop rule in the upper and lower loops to write additional equations. Finally, using these equations and the given values of resistors and voltage sources, we can solve for the currents I1, I2, and I3.