Electronic+Materials_2013

Ra l va il a cross sec4onal area l length

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Unformatted text preview: material is related to the applied voltage (V - volts, J/C) and the resistance (R - ohms, V/A) of the material. V = IR Electrical Conduction Resistivity (Ohm•m) (ρ) is related to resistance (R). Resistance is dependent on specimen geometry. Resis4vity is related to resistance in terms of the length between measurement points and cross- sec4onal area. Together, these two equa4ons provide the rela4on between resis4vity and current flow. RA ρ= l VA ρ= Il A = cross sec4onal area | l = length Electrical Conductivity • Room temperature conductivity (Ohm•m)-1 = (Ω•m)-1 Conductors METALS Silver Copper Iron 6.8 x 10 7 6.0 x 10 7 7 1.0 x 10 Semiconductors Silicon Germanium CERAMICS - 10 4 x 10 0 2 x 10 - 11 Soda- lime glass 10 - 10 Concrete 10 - 9 - 13 Aluminum oxide <10 POLYMERS - 4 Insulators - 14 Polystyrene <10 - 15 -...
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This note was uploaded on 01/16/2014 for the course EMA 3010 taught by Professor Unknown during the Fall '08 term at University of Florida.

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