In electromagnetism and electronics, electromotive force (also electromotance, abbreviated emf, denoted E {\displaystyle {\mathcal {E}}} ) is an energy...

Counter-electromotive force (counter EMF, CEMF, back EMF), is the electromotive force (EMF) manifesting as a voltage that opposes the change in current...

magnetic field will interact with an electric circuit to produce an electromotive force (emf). This phenomenon, known as electromagnetic induction, is the...

formula describe the magnetic force on a current-carrying wire (sometimes called Laplace force), the electromotive force in a wire loop moving through...

across the membrane, then the difference in electric potential generates a force that drives ion diffusion until the charges are balanced on both sides of...

needed to understand how the triboelectric effect can generate an electromotive force. Generally, increased humidity (water in the air) leads to a decrease...

by cloth or cardboard soaked in brine, which increased the total electromotive force. When the top and bottom contacts were connected by a wire, an electric...

Electromagnetic or magnetic induction is the production of an electromotive force (emf) across an electrical conductor in a changing magnetic field. Michael...

the build-up of electric charge (e.g., a capacitor), and from an electromotive force (e.g., electromagnetic induction in a generator). On a macroscopic...

electric potential, electric potential difference (voltage), and electromotive force in the International System of Units (SI). One volt is defined as...

magnetic flux passing through a loop of conductive wire will cause an electromotive force, and therefore an electric current, in the loop. The relationship...

kinematic viscosity, electric current, electric charge, electric dipole, electromotive force (or electric potential difference), electrical resistance, capacitance...

well as of permanent magnet motors. Back electromotive force (EMF) is also known as the counter-electromotive force. It is the voltage that occurs in electric...

name, that is: Electromotive force = Current × Resistance Ohm brought into order a host of puzzling facts connecting electromotive force and electric current...

IUPAC "Gold Book" defines it as; "the value of the standard emf (electromotive force) of a cell in which molecular hydrogen under standard pressure is...

imagine that we attach, in series with impedance Ze, a source with electromotive force E equal to Vθ but directed to oppose Vθ, as shown in Figure 2b. No...

state, the electromotive force is proportional to the current produced. "That is, that the resistance, the ratio of the applied electromotive force (or voltage)...

electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interactions of atoms and molecules...

magnetostatics, the force of attraction or repulsion between two current-carrying wires (see first figure below) is often called Ampère's force law. The physical...

machine or force in a linear machine. The second role is to generate an electromotive force (EMF). In the armature, an electromotive force is created...

of force between two electrically charged particles at rest. This electric force is conventionally called the electrostatic force or Coulomb force. Although...

Electrotechnical Commission (IEC), approved the volt as the unit for electromotive force, the ampere as the unit for electric current, and the coulomb as...

angular impulse by Maxwell). E is called the electromotive force by Maxwell. The term electromotive force is nowadays used for voltage, but it is clear...

magnetomotive force was coined by Henry Augustus Rowland in 1880. Rowland intended this to indicate a direct analogy with electromotive force. The idea of...

Electric Currents. Fleming described the orientation of the induced electromotive force by referencing the motion of the conductor and the direction of the...

active source. An active network contains one or more sources of electromotive force. Practical examples of such sources include a battery or a generator...

is exactly balanced by a counter-electromotive force so that no current flows. If this counter-electromotive force is increased, the cell becomes an...

Galvani incorrectly thought the source of electricity (or source of electromotive force (emf), or seat of emf) was in the animal, Volta incorrectly thought...

the sign of their Seebeck coefficients. The Seebeck effect is the electromotive force (emf) that develops across two points of an electrically conducting...

_{\mathbf {B} }}{\mathrm {d} t}},} which indicates that the induced electromotive force E {\displaystyle {\mathcal {E}}} and the rate of change in magnetic...