Electromotive force

Electromotive Force

The Electromotive Force (often abbreviated as EMF) is a fundamental concept in the field of Physics and Electrical Engineering. It refers to the energy provided by a power source, such as a battery or generator, per unit electric charge that passes through the source. It is measured in volts, which are equivalent to joules per coulomb.

Definition

The term "Electromotive Force" is somewhat misleading as it is not a force in the traditional sense, but rather a potential, or energy per unit charge. It is the work done by the source in driving a unit positive charge around a closed circuit. The electromotive force is often thought of as the source of electrons in an electrical circuit.

Measurement

The unit of electromotive force is the volt (V), which is equivalent to one joule per coulomb (J/C). This unit is named after the Italian physicist Alessandro Volta, who invented the voltaic pile, the first chemical battery.

Applications

Electromotive force is a fundamental concept in many areas of physics and engineering, including Electrical Engineering, Electromagnetism, and Quantum Mechanics. It is also essential in the design and analysis of electrical circuits and power systems.

See Also

• Voltage
• Electric Potential
• Electric Field
• Electric Charge
• Electric Current

References

Electromotive force Resources
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