3. TYPES OF CIRCUITS

3.1. Series circuits

Two or more elements form a series circuit when the output of one element provides the input for the next element.

To calculate the total resistance of a circuit, we add the resistance values of each load:

RT = R1 + R2 + R3 ...

3.2. Parallel circuit

In a parallel circuit, the various components share the same input and output. In other words, the wires from both sides are joined together.

If identical batteries are connected in parallel, the voltage of the circuit won't increase. 

3.3. Combination circuit

A combination circuit has some elements connected in series, and some other in parallel.

In this type of circuit, the current remains constant between elements that are connected in series. At the same time, the voltage remains constant between elements that are connected in parallel.