This is a video tutorial about current and voltage. This video describes the basic in electricity. In this video, the electricity analogous as river. The fundamental quantity in the river is how much the current flowing. The symbol of the current is I and measured in coulomb per second. Coulomb per second is given special name, the name is Amp. Voltage is potential difference that is given symbol V. Potential difference in the wire cause the current flow. Electron will flow from high potential to lower potential. Voltage is a potential to do work that is measured with Joule per coulomb. Joule per coulomb is given another name, it’s Volt. Here is the video :