permanent magnet moving coil are.... instrument.
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Permanent Magnet Moving Coil (PMMC) Meter
January 24, 2021 by Electrical4U
What Is A Permanent Magnet Moving Coil
What is a Permanent Magnet Moving Coil (PMMC)?
A Permanent Magnet Moving Coil (PMMC) meter – also known as a D’Arsonval meter or galvanometer – is an instrument that allows you to measure the current through a coil by observing the coil’s angular deflection in a uniform magnetic field.
A PMMC meter places a coil of wire (i.e. a conductor) inbetween two permanent magnets in order to create stationary magnetic field. According to Faraday’s Laws of electromagnetic induction, a current carrying conductor placed in a magnetic field will experience a force in the direction determined by Fleming’s left hand rule.
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