Electrical Resistance

Electrical Resistance is the measure of how difficult it is for a current to pass through a conductor.

This quantity often measured in ohms [math]\displaystyle{ \Omega(\frac{Volts}{Amps}) }[/math] is used to determine the amount of current that will pass through a circuit. The quantity itself is dependent on a variety of factors including material, shape, and temperature.

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A Mathematical Model

In a circuit the Electrical Resistance is often calculated as [math]\displaystyle{ R = \frac{|\Delta V|}{I} }[/math] Often written [math]\displaystyle{ I = \frac{|\Delta V|}{R} }[/math] where V is the voltage and I is the current and R is the resistance. In these equations voltage and resistance are independent variables and Current is the dependant variable.

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