Basic DC Theory
DC CIRCUIT ANALYSIS
Fifth, apply Ohms Law to obtain the voltage drops across Resistors R1, R2, and R3:
V1 = I1R1 = (0.2686 amps)(50W) = 13.43 Volts
V2 = I2R2 = (0.3458 amps)(100W) = 34.58 Volts
V3 = (I2 - I1) R3 = (0.0772 amps)(200W) = 15.44 Volts
Sixth, check the calculations by applying Kirchhoffs Laws:
Apply Kirchhoffs voltage law to the larger outer loop (Figure 41).
The sum of the voltage drops around the loop is essentially zero. (Not exactly zero due to
Figure 41 Applying Voltage Laws to Outer Loop
0.01 @ 0
Therefore, the solution checks.
Use Kirchhoffs current law at one of the junctions (Figure 42).