Hi all.(adsbygoogle = window.adsbygoogle || []).push({});

This question has been bugging me for a while now so hopefully you can help.

I want to know how an electrical load (such as a motor) maintains its power, like when the voltage drops the current increases.

I know all the formulas ( in this case P = V x I ) but want to know how it works.

At nominal operation the motor is spinning fine and sees a current passing through its terminals. Then there is a voltage drop or dip and so it draws more current.

How does it (know how to) draw more current? A motor requires a current to induce a magnetic field and it (if it had a brain) does not know anything about the source. All it wants is a particular current to produce the magnetic field. Where does the voltage relationship come into this.

I have searched and searched but all I can find is it maintains P = V x I, but not how it does this.

Thanks,

Mark.

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# Electrical load power

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