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Resistor

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The Resistor

The resistor is a fundamental electrical component in physical circuits as well as circuit analysis and equivalent circuits.  All materials exhibit some form of resistance, some are greater than others, eg. copper, aluminium and gold are considered good conductors (low resistance), stainless steel, carbon, tungsten are average conductors (medium resistance), and then ceramics, mica and air are considered poor conductors (high resistance).



Units of Measurement

The modern day unit of measurement is the 'Ohm'. This unit was assigned in 1872.