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