This app is a collection of educational material on electricity and electric circuits. It is useful for all those who are interested in these topics. 

In addition to the basic concepts of electric circuits, the app contains a number of advanced topics. These include the voltage-source, switches, transistors, diodes, the resistance-wire, the circuit-board, voltage regulators, current regulators, and many others.

All the material in this app has been collected from a number of sources. The most important of these is the Internet. The material is written in a very simple and easy-to-understand style. This makes it very useful for all ages.