elektronáramlást

Elektronáramlást, often translated as electric current, is the flow of electrically charged particles. Most commonly, this refers to the flow of electrons, which are negatively charged subatomic particles. In solid conductors like metals, electrons are the primary charge carriers. The movement of these electrons creates an electric current. The unit of 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.

The direction of conventional current is defined as the direction of flow of positive charge, even though in most metallic conductors, it is the negatively charged electrons that move. This convention was established before the nature of charge carriers was fully understood. The magnitude of the electronáramlást depends on the number of charge carriers and their drift velocity. Electronáramlást can be generated by various sources, including batteries, generators, and photovoltaic cells. It is a fundamental concept in electricity and is essential for the operation of most modern technologies, from lighting and heating to complex electronic devices. The flow of charge can be direct current (DC), where the charge flows in one direction, or alternating current (AC), where the direction of flow periodically reverses.