The series-parallel circuit combines the two previously described types of circuits into one operating system with some distinct advantages. By introducing a load or resistor in series with a parallel circuit, the current flow through the circuit can be controlled (Figure 9).
- Series-parallel circuit
Using Ohm’s law you can calculate total current flow.
I = E ÷ R
I = 12 V ÷ 2.3 Ω
I = 5.15 mA