Discussion
The unit of mmf is normally taken as
Answer: C
The unit of mmf is the ampere turn.
Magnetomotive force is the driving force that sets up flux in a magnetic circuit, and it equals the current multiplied by the number of turns it flows through: mmf = NI. Its unit is therefore the ampere turn (AT), often written simply as ampere in SI.
The weber is the unit of flux, the weber per square metre (tesla) is the unit of flux density, and the ampere turn per metre is the unit of magnetising force H, which is mmf per unit length.
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