Category: Series and Parallel Networks

For the circuit shown in Figure 3.18, the total circuit resistance RT is given by: Figure 3.18 : Current division circuit and  Current  Similarly, current  Summarizing, with reference to Figure 3.18: Example 3.11 For the series-parallel arrangement shown in Figure 3.19, find (a) the supply current, (b) the current flowing through each resistor and (c) the voltage across each resistor. Figure…

shows three resistors, R1, R2 and R3 connected across each other, i.e., in parallel, across a battery source of V volts. Figure 3.9 : Parallel resistors In a parallel circuit: (a) the sum of the currents I1, I2 and I3 is equal to the total circuit current, I, i.e., I =I1 +I2 +I3, and (b) the source voltage, V volts, is the same across each of the resistors. From Ohm’s law: where R is the total circuit resistance. Since I =I1 +I2 +I3…

The voltage distribution for the circuit shown in Figure 3.5(a) is given by: Figure 3.5 : Potential divider circuit The circuit shown in Figure 3.5(b) is often referred to as a potential divider circuit. Such a circuit can consist of a number of similar elements in series connected across a voltage source, voltages being taken from connections between the elements. Frequently the…

 shows three resistors R1, R2 and R3 connected end to end, i.e., in series, with a battery source of V volts. Since the circuit is closed, a current I will flow and the voltage across each resistor may be determined from the voltmeter readings V1, V2 and V3. Figure 3.1 : Series circuit In a series circuit: (a) the current I is the same in all parts of the circuit; therefore, the…