The conventional symbol for current is I, which originates from the French phrase intensité du courant, (current intensity). Current intensity is often referred to simply as current. The I … See more

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that … See more

The occurrences of electric current can be divided into three main types: inorganic, biological and technological.
Electrostatic materials - piezoelectricity - the geophysical flow of molten iron
Natural observable examples of electric current include See more

The conventional direction of current, also known as conventional current, is arbitrarily defined as the direction in which positive charges … See more

In alternating current (AC) systems, the movement of electric charge periodically reverses direction. AC is the form of electric power most commonly delivered to businesses and … See more

Current can be measured using an ammeter. While a galvanometer offers direct electric current measurement, it requires breaking … See more

Joule heating, also known as ohmic heating and resistive heating, is the process of power dissipation by which the passage of an electric current through a conductor increases … See more