Page 111 - Basic Electrical Engineering

Figure 2.10 Parallel connection of resistors

Let the equivalent resistance of the three resistors connected in parallel across
terminals A and B be R as shown in Fig. 2.10 (b). Then,

From (i) and (ii),

or,

In general, if there are n resistors connected in parallel, the equivalent
resistance R is expressed as

2.3.3 Series–Parallel Circuits

Figure 2.11 shows a number of resistors connected in series–parallel

combinations. Here, two parallel branches and one resistance, all connected