Series Circuit

In a series circuit the electricity has no alternative paths. All of the electricity must pass through all of the components in the circuit, see Figure 26.1.

FIGURE 26.1. Series circuit.

For the electricity to leave and return to the source it must pass through all three loads, resistors. In a series circuit the total resistance of the circuit is the sum of each resistance where the unit or resistance in the Ohm (ft).

The total resistance of the circuit in Figure 26.1 is:

The total amperage flow in the circuit can be determined by dividing the source voltage by the total resistance.

Problem: What is the current flow for the circuit in Figure 26.1 when the source voltage is 120 V?

Solution:

E 120 V

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