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HELP PLEASE!! How does the current (I) and the magnetic field (B) of the solenoid affect the freq...

HELP PLEASE!!

How does the current (I) and the magnetic field (B) of the solenoid affect the frequency rotation of an electric motor??? So what is the relation between f Vs.I and of f versus B? Also, Establish a mathematical relationship between the frequency f and I and also between f and B.

Thank you!!

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