Magnetomotive force (magnetic potential) is the force that drives or tends to drive a magnetic field. It is usually measured in amperes (symbol: A).

### What is MMF formula?

The MMF (magnetomotive force) formula is an equation that describes the relationship between the magnetic flux through a coil of wire and the coil's resistance. The MMF formula is:

MMF = B * N * I

Where:

B = magnetic flux (in webers)

N = number of turns in the coil

I = current flowing through the coil (in amperes)

#### What is MMF in magnetic field intensity?

Magnetomotive force (MMF), also known as the ampere-turn (AT) value, is a measure of the strength of a magnetic field. It is the product of the current in amperes (I) and the number of turns in the coil (N). The SI unit for MMF is the ampere-turn (AT), which is equal to one weber per meter (Wb/m).

The AT value is often used to design electromagnets and transformers. For example, the AT value of an electromagnet can be increased by increasing the number of turns in the coil or by increasing the current.

### What is magnetomotive force How is it similar and different from electromotive force explain magnetic field intensity magnetic flux density and magnetic flux?

Magnetomotive force (MMF) is a measure of the "strength" of a magnetic field. It is similar to electromotive force (EMF) in that it is a measure of the potential difference between two points in a circuit. However, unlike EMF, which is a measure of the potential difference between two points in an electric circuit, MMF is a measure of the potential difference between two points in a magnetic circuit.

The SI unit of MMF is the ampere (A).

Magnetic field intensity (H), also called the magnetic field strength, is a measure of the strength of the magnetic field at a given point. It is defined as the force exerted by the magnetic field on a unit length of conductor placed at that point.

The SI unit of H is the ampere per meter (A/m).

Magnetic flux density (B), also called the magnetic induction, is a measure of the strength of the magnetic field at a given point. It is defined as the ratio of the magnetic flux through a given area to the area itself.

The SI unit of B is the tesla (T).

Magnetic flux (Φ) is a measure of the amount of magnetic field lines passing through a given area. It is defined as the product of the magnetic field strength and the area through which it is passing.

The SI unit of Φ is the weber Is magnetic force and magnetomotive force same? Magnetic force is the force that a magnetic field exerts on a moving charged particle. Magnetomotive force is the force that a magnetic field exerts on a conductor in a circuit. What happens to the MMF when the magnetic flux decreases? As the magnetic flux decreases, the MMF also decreases. This is because the MMF is directly proportional to the magnetic flux.