Elektrivoolu
Elektrivoolu refers to the flow of electric charge, typically electrons, through a conductive material. This movement of charge is driven by a potential difference, also known as voltage, which creates an electric field. The strength of the electric field dictates how quickly the charges move. The SI unit for electric current is the ampere (A), named after André-Marie Ampère. One ampere is defined as one coulomb of charge passing a point in one second.
There are two main types of electric current: direct current (DC) and alternating current (AC). In DC,
The relationship between voltage (V), current (I), and resistance (R) in a circuit is described by Ohm's