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In this case the inverse of the equivalent resistance is equal to the sum of the inverse resistance of all the resistors in the network. resistivity: In general, the resistance to electric current of a material; in particular, the degree to which a material resists the flow of electricity.
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Describe the electrical component known as a resistor. State the relationship between resistance of a resistor and its length, cross-sectional area, and resistivity. State the relationship between resistivity and temperature.
- Conductance vs Resistance
- Conductance Units—Mho and Siemens
- Review of Conductance
- Related Content
Resistance is defined as the measure of friction a component presents to the flow of current through it. Symbolized by the capital letter “R,” resistance is measured in the unit of “ohm,” which is represented by the Greek capital letter omega, Ω. With that in mind, we can also think of this electrical property in terms of its inverse—how easy it is...
Carrying this idea further, a symbol and unit were created to represent conductance. The symbol is the capital letter “G,” and the unit is the mho, which is “ohm” spelled backward (and you didn’t think electronics engineers had any sense of humor!). Despite its appropriateness, the unit of the mho was replaced in later years by the unit of Siemens ...
Conductance is the measure of how easy it is for electric current to flow through somethingConductance is symbolized by the letter “G”Conductance is the inverse of resistance: G = 1/RConductance is measured in units of Siemens or mhosLearn more about conductance and resistance down below: Calculators: 1. Parallel Resistor Calculator 2. Trace Resistance Calculator 3. Resistivity Calculator Worksheets: 1. Voltage, Current, and Resistance Worksheet 2. Ohm’s Law Worksheet 3. Specific Resistance of Conductors Worksheet 4. Resistance, Reactance, and Impedance Video Tutorials and Lect...
The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its reciprocal quantity is electrical conductance, measuring the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with mechanical friction.
Review the key terms, equations, and skills related to current, resistance, and resistivity, including how to find the current direction and what resistance depends on.
Electrical resistance is the hindrance to the flow of charge through an electric circuit. The amount of resistance in a wire depends upon the material the wire is made of, the length of the wire, and the cross-sectional area of the wire.
The inverse of resistivity is called conductivity. There are contexts where the use of conductivity is more convenient. Electrical conductivity = σ = 1/ρ
