Formula: Electric Power Voltage    Electrical Resistance

Formula: Electric Power
Simple circuit with one resistor

Electric Power

Electric power is the energy emitted / absorbed by a circuit per second, for example.


Electric voltage here is the potential difference between two points. For example, between two points of an electrical conductor. If the voltage is doubled, the power converted is quadrupled.

Electrical Resistance

Electrical resistance impedes the flow of electrically charged particles in a conductor. If the voltage \(U\) is kept constant, the smaller the resistance \(R\), the larger the power converted.

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