Formula: Electric Power Electric current    Electrical Resistance

Formula: Electric Power
Joule heating: resistors heat up to different extents

Electric power

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

Electric current

Electric current (charges per time) flowing through a conductor, for example in a circuit. If you double the current, the power converted is quadrupled.

Electrical Resistance

Electrical resistance impedes the flow of electrically charged particles in a conductor. If the current \(I\) is kept constant, the larger the resistance, the larger the power converted. The spot with the greatest resistance becomes the warmest.

The Most Useful Physics Formula Collection on the Internet

✅ Contains only most useful formulas
Understandable for everyone, because it contains no vectors and integrals
✅ Formulas are colored and visualized
✅ Perfect for high school and undergraduate physics students