The Magnetomotive Force (MMF) in a transformer is calculated using the formula:

$\text{MMF}=�\cdot �$MMF=N.I

where:

• $\text{MMF}$MMF is the magnetomotive force measured in ampere-turns (AT).

• $�$N is the number of turns in the coil (number of windings of the transformer).

• $�$I is the current flowing through the coil measured in amperes.

This formula expresses the product of the number of turns and the current as the magnetomotive force. The MMF is a key parameter in understanding and analyzing the magnetic circuit in transformers. It represents the force that establishes the magnetic field within the transformer's core.

What is the difference between EMF and MM

Hint :EMF stands for electromotive force. EMF is the force that is responsible for driving the electrons in an electric circuit. Magnetomotive force is abbreviated as MMF. MMF is the driving force required to drive the magnetic flux through the circuit.

Complete Step By Step Answer:

Note :

The term EMF refers to the voltage produced by a source, such as a generator, battery, or photocell. In the case of magnetic circuits, the term MMF is used. In magnetic circuits, the term MMF is analogous to the term EMF in electric circuits.The magnetomotive force can also be expressed as the product of magnetic flux and magnetic reluctance (F=φR)