Electric current, in terms of the electron theory, is defined as the flow of electrons through a conductor due to the movement of negatively charged particles. It is the rate of flow of charge per unit time, typically measured in amperes. The flow of electrons creates a potential difference, causing them to move from a higher potential to a lower potential.
The two-fluid theory of electricity was proposed by Benjamin Franklin in the 18th century. It suggests that electric current consists of two components - positive and negative charges - flowing in opposite directions. This theory was later replaced by the electron theory, which states that electric current is the flow of negatively charged particles called electrons.
The finding that electric current can produce magnetic field (Oersted Theory) that leds to idea that magnetic field should also produce electric current (Faraday Theory). I . xD -JMiko Andres Benjamin B. Esguerra Memorial National High School
According to electromagnetic theory, a changing magnetic field induces an electric field. This phenomenon is known as electromagnetic induction, where the changing magnetic field creates a force that causes electrons to move, generating an electric current.
The traditional flow theory assumes that current flows from positive to negative, following the direction of conventional current. In contrast, the electron flow theory states that electrons actually move from negative to positive, which is the direction real current flows in a circuit. Both theories describe the movement of charge in a circuit, but they differ in which terminal they consider as the starting point.
The electron flow concept states that electrons flow from the negative terminal to the positive terminal of a voltage source, in contrast to the conventional current flow theory which assumes positive charge carriers moving from positive to negative.
The two-fluid theory of electricity was proposed by Benjamin Franklin in the 18th century. It suggests that electric current consists of two components - positive and negative charges - flowing in opposite directions. This theory was later replaced by the electron theory, which states that electric current is the flow of negatively charged particles called electrons.
Because much of the theory of electricity was developed before scientists realised that it was not a moving positive charge that was responsible but a negative one (of the electron).
When we consider electron flow, we think of moving electrons. The electron has a negative charge. This model of current flow, the electron current flow model, follows the movement of those negative charges.As a contrast, we might consider what is called conventional current flow. And that the model of current involves the movement of charges with a positive polarity.
A magnetic field is induced around any conductor carrying an electric current.As explained in the Oersted Theory.
The theory that states electrons flow from negative to positive is known as conventional current flow. This theory was established before the discovery of the negatively charged electron and is still used for practical purposes in electrical engineering and circuit analysis.
Classical free electron theory is modeled by drude - Lorentz to explian elctrical conductivity in metals. According to this free electron in a metal (valence electron) move randdomly at room temperature and these free electron are drifted in opposite to the direection of the applied electric field. This is repsonsible for the conduction. Here all the free elctron are are considered as equal in all aspect.
write note on free electron theory
The theory behind applying an electric current to fractures to stimulate healing is based on the fact that the concave side of the bone becomes negatively charged and the convex side is positively charged.
Bernard Adkins has written: 'The general theory of alternating current machines' -- subject(s): Electric machinery, Alternating current
Electronic theory is the theory of the behavior of the electron under various conditions including a free electron, a bound electron in either an outer or inner orbit of the atom.
The finding that electric current can produce magnetic field (Oersted Theory) that leds to idea that magnetic field should also produce electric current (Faraday Theory). I . xD -JMiko Andres Benjamin B. Esguerra Memorial National High School
According to electromagnetic theory, a changing magnetic field induces an electric field. This phenomenon is known as electromagnetic induction, where the changing magnetic field creates a force that causes electrons to move, generating an electric current.