In electromagnetism and electronics, electromotive force (also electromotance, abbreviated emf, [1] [2] denoted ) is an energy transfer to an electric circuit per unit of electric charge, measured …

在电路学里，电动势（英语： electromotive force ，缩写为 EMF ，或以 表示）表征一些电路元件供应电能的特性。这些电路元件称为“电动势源”。电化电池、太阳能电池、燃料电池、热电装 …

在電路學裏，電動勢（英語： electromotive force ，縮寫為 EMF ，或以 表示）表徵一些電路元件供應電能的特性。這些電路元件稱為「電動勢源」。電化電池、太陽能電池、燃料電池、熱電 …

2023年2月2日 · Electromotive force, or emf, is the energy required to move a unit electric charge by an energy source such as a battery, cell, or generator. It is defined as the potential …

在电路学里，电动势（英语：electromotive force，缩写为emf）表征一些电路元件供应电能的特性。 这些电路元件称为“电动势源”。 电化电池、太阳能电池、燃料电池、热电装置、发电机等 …

Faraday’s experiments showed that the emf induced by a change in magnetic flux depends on only a few factors. First, emf is directly proportional to the change in flux ΔΦ Δ Φ. Second, emf …

Electromotive force is defined as the electric potential produced by either an electrochemical cell or by changing the magnetic field. EMF is the commonly used acronym for electromotive force. …

2021年3月26日 · EMF是以每库伦焦耳(joules per coulomb)为单位。 这个定义的参考框架适用于使用非电力能源的装置将电能传递给一个电荷单位，如果电荷有机会，其将流向某处(电流)，并 …

Electromotive force is the characteristic of any energy source capable of driving electric charge around a circuit. It is abbreviated E in the international metric system but also, popularly, as …

The lower-potential terminal is sometimes called the negative terminal and labeled with a minus sign. This is the source of the emf. Figure \(\PageIndex{2}\): A source of emf maintains one …