The resistance R and conductance G of a conductor of uniform cross section, therefore, can be computed as The resistance of 10 meter gauge 17 copper wire with cross sectional area 1.04 mm2 can be calculated as, R = (1.7 x 10-8 Ω m) (10 m) / ((1.04 mm2)(10-6 m2/mm2)), The copper wire above is reduced to gauge 24 and cross-sectional area 0.205 mm2. Conductors have lower resistance at lower temperatures. http://commons.wikimedia.org/wiki/File:Incandescent_bulb_lit.jpg, https://www.anixter.com/en_ca/resources/literature/wire-wisdom/conductor-resistance.html, http://hyperphysics.phy-astr.gsu.edu/hbase/electric/restmp.html, http://www.explainthatstuff.com/incandescentlamp.html, https://energyeducation.ca/wiki/index.php?title=Conductor_resistance&oldid=7001. AddThis use cookies for handling links to social media. the cross-sectional area of the conductor; and can be expressed as. Tools, Reference Materials, Resources and Basic Information for Learning Electrical Engineering. A copper conductor of length 500 meters is used to supply electrical energy to a lighting load of 1,000W. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! The most common types of resistors are variable resistors and fixed resistors. By utilizing the resistance of a conductor, light can be created in an incandescent light bulb. Only emails and answers are saved in our archive. The values above are for temperatures 20 oC. The increase in resistance can be calculated to, R = (1.7 x 10-8 Ω m) (10 m) / ((0.205 mm2)(10-6 m2/mm2)). If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Their resistance (DC) increases with increasing temperature. Note that resistivity depends on temperature. Conductor resistance is a property of a conductor at a specific temperature, and it is defined as the amount of opposition there is to the flow of electric current through a conducting medium. We don't collect information from our users. [2] The resistance of a conductor depends on the cross sectional area of the conductor, the length of the conductor, and its resistivity. It is a function of many factors including temperature which greatly affects the resistance of a given material. To get the resistance at any other temperature above this, we use the equation: How To Test and Check Single phase Electric Motors, How to Test a 3 Phase Motor Windings With an Ohmmeter, How to Calculate Inverter Power Rating and Inverter Battery Backup Time, How to Measure Electric Motor Insulation Resistance, Types of Earthing Systems Used in Electrical Installations, Resistance and Reactance per km of Copper and Aluminium cables, How to Install and Wire a Photocell Switch in a Lighting Installation.

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