(5) *Equivalent Circuits.*

In the study of electricity, it is often

necessary to reduce a complex circuit into a simpler form.

Any complex

circuit consisting of resistances can be redrawn (reduced) to a basic

equivalent circuit containing the voltage source and a single resistor

representing total resistance.

This process is called reduction to an

equivalent circuit.

Figure 54 shows a parallel circuit with three resistors of equal value and

the redrawn equivalent circuit. The parallel circuit shown in part A shows

the original circuit.

To create the equivalent circuit, you must first

calculate the equivalent resistance.

Given:

R1 = 45 Ohms

R2 = 45 Ohms

R3 = 45 Ohms

FIGURE 54.

PARALLEL CIRCUIT WITH EQUIVALENT CIRCUIT.

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