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Electrical Resistance Calculator

Last updated: Monday, May 01, 2023
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Ohm's Law
Power & Current
Potential & Power

Electric resistance can be determined by using the relationship between electrical power and electrical potential. The formula for this relationship is: electric power = (electrical potential)^2 / electrical resistance. By rearranging this formula, we can solve for electrical resistance as: electrical resistance = (electrical potential)^2 / electric power. This means that if we know the electrical power and electrical potential of a circuit, we can calculate the electrical resistance. This is a useful calculation in designing and analyzing electrical circuits.

An alternative formula for determining the resistance can be derived from:
\(P\) \(=\) \(\dfrac{V^2}{R}\)
\(R\): the resistance
\(V\): the electric potential
\(P\): the electric power
The SI unit of electric resistance is: \(ohm\text{ }(\Omega)\)

Find R

Use this calculator to determine the resistance when the electric potential and the electric power are given.
the electric potential
\(V\)
\(volt\)
the electric power
\(P\)
\(watt\)
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