# Series Resistance

Resistor is really an essential electronic component which has a definite specific resistance. It confines the electron flow through the circuit. For making more complex resistor circuits, the resistors can be joined together in series connection or as combinations of series and parallel connection or as parallel connection. Here, we can discuss on

Closely Related Articles
Electrical Conductance Conductivity of Metal Semiconductor and Insulator | Band TheoryProperties of Electric ConductorElectrical Resistance and Laws of ResistanceMore Related Articles
What is Capacitor and Capacitance? Types of CapacitorsWorking Principle of a CapacitorEnergy Stored in CapacitorQuality Factor of Inductor and CapacitorTransient Behavior of CapacitorCylindrical CapacitorSpherical CapacitorCapacitors in Series and ParallelTesting of Capacitor BankHow to Test Capacitors?Electric Circuit and Electrical Circuit ElementsSeries Parallel Battery CellsElectrical DC Series and Parallel CircuitRL Series CircuitRLC CircuitThree Phase Circuit | Star and Delta SystemRL Parallel CircuitRL Circuit Transfer Function Time Constant RL Circuit as FilterConstruction of AC Circuits and Working of AC CircuitsSeries RLC CircuitParallel RLC CircuitResistances in Series and Resistances in ParallelResonance in Series RLC CircuitPlanar and Non Planar Graphs of CircuitClipping CircuitEarn with usElectric Current and Theory of Electricity | Heating and Magnetic EffectNature of ElectricityDrift Velocity Drift Current and Electron MobilityElectric Current and Voltage Division RuleRMS or Root Mean Square Value of AC SignalWhat is Electric Field?Electric Field Strength or Electric Field IntensityStatic Electric Field | Electrostatic Induction What is Flux? Types of Flux?Magnetic PermeabilityMagnetic Field and Magnetic Circuit | Magnetic MaterialsMagnetic SaturationEnergy Stored in a Magnetic FieldHysteresis LoopA Current Carrying Conductor Within A Magnetic FieldMagnetic SusceptibilityHard Magnetic MaterialsSoft Magnetic MaterialsMagnetic Circuit with Air GapFourier Series and Fourier TransformTrigonometric Fourier SeriesAnalysis of Exponential Fourier SeriesElectrical and Electronics Engineering BooksWhat is Inductor and Inductance | Theory of InductorMutual InductanceSelf InductanceSI System of UnitsElectrical International SymbolElectric Power Single and Three Phase Power Active Reactive ApparentVector Algebra | Vector DiagramRelationship of Line and Phase Voltages and Currents in a Star Connected SystemVector Diagram | Three Phase Vector DiagramTypes of resistor Carbon Composition and Wire Wound ResistorVaristor Metal Oxide Varistor is nonlinear ResistorCarbon Composition ResistorWire Wound ResistorVariable Resistors | Defination, Uses and Types of Variable ResistorsLight Dependent Resistor | LDR and Working Principle of LDRSource of Electrical EnergyVoltage SourceIdeal Dependent Independent Voltage Current SourceVoltage or Electric Potential DifferenceVoltage in SeriesVoltage in ParallelVoltage Drop CalculationVoltage DividerVoltage MultiplierVoltage DoublerVoltage RegulatorVoltage FollowerVoltage Regulator 7805Voltage to Current ConverterNew Articles
Electrical and Electronics Engineering BooksWater MeterAir MeterDigital PotentiometersBasic Construction of Wind Turbine**series connected resistors**. More than one resistor which is connected together as a chain in a solo line form makes the**series resistors**(shown in figure). Since they are connected in one line, the current flow will be the same in each resistor. That is, the current flowing into the first connected resistor will go to the second resistor and the same current will pass through the following resistors. Thus, we can see that there will be a common current passing through every resistor because of the single path. Voltage divider circuits can be made from these series resistors circuit.## Equivalent Resistance

Instead of connecting resistors in series or any complicated resistors network, an equivalent resistor with equivalent resistance (R_{EQ}) or equivalent impedance (Z_{EQ}) can be implemented. It will be the sum total of the individual resistors. The complexity or the combination of the network of resistors is not the depending factor but every resistor should obey the fundamental laws (Kirchhoff’s Circuit law and Ohm’s law). So, here the equivalent resistance is given by The important point to note is the value of the R_{EQ}will be higher than the value of the biggest resistor in the series circuit. For example, if there are 3 resistors of the values 1Ω, 2Ω and 6Ω respectively. Then the which is higher than the biggest resistor value 6Ω. The current flowing through the circuit will be the equal The Electrical conductance is actually the reciprocal of resistance. So the total conductance of the circuit is given by Thus, we can say that as the number of resistors increases, the value of equivalent resistance increases. This equivalent resistor will have the same outcome in the circuit when compared the original group of resistors.When the circuit consists of equal series resistors or series impedance, the equivalent value of resistance will be the product of the total number of resistors and the value of resistor. For example, if there are three resistors of the value ‘R’, then the equivalent resistance becomes 3R.

## Voltage of Series Resistors

The voltage across the each resistor connected in a series circuit is different from the current flowing through it. The voltage across each resistor in the series circuit can be calculated with the help of Ohm’s law . For the above circuit; So, from Ohm’s law we will get the value of each resistance, current or voltage of the series circuit. If the resistor is interchanged in a series circuit, it will not affect the total power or equivalent resistance or the current. From Kirchhoff’s Circuit law, Total Supply Voltage = Sum of voltages across each resistor of the circuit Thus,## Advantages of Series Resistors

- Excessive heating does not occur easily.
- Simple design.
- More power devices can be added.

## Disadvantages of Series Resistors

- Breakage or fault in a single point causes the failure in total circuit.
- As the number of resistors or components increases, the value of equivalent resistance or total resistance increases.