Resistance Serial Parallel Connections

Overview

Resistance calculations for series and parallel resistor combinations.

Formula

$R_{total} = R_1 + R_2$

Calculator

Notes

• Results are approximate and should be verified for critical applications
• Input values should be within reasonable engineering ranges

Additional Formulas

Power Dissipated by a Resistor $P = UI = RI^2 = \frac{U^2}{R}$ Where:

• P = Power (W)
• U = Voltage (V)
• I = Current (A)
• R = Resistance (Ω)

Resistor Specifications

Standard resistors are available in a wide range of specifications.

Key Concepts

Thévenin's Theorem

Any two-terminal network consisting of resistors and voltage sources can be replaced by an equivalent circuit consisting of a single voltage source (V_th) in series with a single resistance (R_th). This simplifies the analysis of complex circuits, particularly when calculating the current through or voltage across a specific load component.

References

• Original Source