What is E.M.F.?

Question

I'm doing something to do with batteries and was curious to find out what E.M.F. is. Is it voltage?

Answer 1

The electrical charge that an object gets is determined by the number of electrons that the object lost or gained. Because such a vast number of electrons moves, a unit called the coulomb is used to indicate the charge. If an object has a negative charge of 1 coulomb, it has gained 6.28 X 10 to the 18th. power extra electrons. This is 6,280,000,000,000,000,000 electrons.

When two charges have a difference of potential, the electric force that results is called an (electromotive force) or (EMF). The unit used to indicate the strength of the emf is the volt. When a difference of potential causes 1 coulomb of current to do 1 joule of work, the (emf) is 1 volt.

There is also another type of (EMF), and it’s called (Counter Electromotive Force). More often referred to as “Counter Voltage”.

Frequently, a voltage and current regulator, as well as a (reverse-current cutout relay), are all used together to control the output of a variable-speed generator. When this is done, all three relays are usually built and installed as a single unit. Actually, this is the unit called the “voltage regulator” in an automobile. Although it is called a voltage regulator, it really consists of a “voltage regulator”, a “current regulator”, and a “reverse-current cutout relay”.

When the battery starts to get a full charge it starts generating a “Voltage”, and “Current”, back in the opposite direction of the incoming voltage and current. When fully charged it saturates the reverse-current cutout relay coil which is wound backwards from the other relay coils and disconnect the generator so that no more voltage and current can flow to the battery and over charge it.

Good luck with your project

Hope this helps!

Sparky Miller
Wellsville, Ohio

Answer 2

Electronic Magnetic Field. It is not voltage

Answer 3

E. M. F. = electromotive force, which is measured in volts.