DC CIRCUIT ANALYSIS
Basic DC Theory
Find I2 and I3. The voltage across R1 and R2 is equal to the applied voltage (V),
minus the voltage drop across R1.
V2 = V3 = V - ITR1 = 60 - (7.5 X 4) = 30 V
Then, I2 and I3 are calculated.
Y and Delta Network Calculation
Because of its shape, the network shown in Figure 47 is called a T (tee) or Y (wye) network.
These are different names for the same network.
Figure 47 T or Y Network