This is a free version of the app that allows you to test your knowledge of electrical power calculations. It contains advertising. The full version of the app is available to support the developer and get rid of the advertising banners.

The app includes Ohm's law for DC, Ohm's law for AC, LC resonance, Y-Δ transformation, electrical energy, current density, ideal transformer, AC circuits, connection of capacitors, voltage divider, LED resistor, and more.

The app also allows you to connect a motor and calculate its power, as well as its efficiency and the maximum and minimum voltage it can generate.