Physics, what is the power consumption formula we usually say? What forces work? What are amps for? It is a part of the total electric energy.

Where I is current, R is resistance and U is voltage. The third formula can be used in any circuit, and the first two formulas are only used in pure resistance circuits. It's the current doing work.

Ampere does work:

A charged conductor bar is subjected to ampere force in a magnetic field. If the conductor bar moves under the action of Ampere force, Ampere force will do work as long as the direction of movement is not perpendicular to Ampere force. Generally appear on the conductor slide bar.

And the work done by ampere force is equal to Joule heat. If the current and voltage are constant, it is convenient to calculate. You can also use the above formula to calculate

Pictures of Ampere's works:

Figure 1 indicates that the electrified conductor bar moves under the action of ampere force in the magnetic field, and the ampere force does work.

Please keep asking questions. If you are satisfied, I hope to adopt them. Thank you.