BASIC ELECTROMAGNETIC LAWS|Online electrical engineering & Electrical Interview Questions

Saturday, May 8, 2010

BASIC ELECTROMAGNETIC LAWS

1.FARADAY'S LAW
It states that "If a conductor of length 'l' is moved with a velocity 'v' in a magnetic field of constant flux density 'B', then the EMF induced is equal to the rate of change of flux."
E=Blv (Volts)
where,  E =  Induced EMF (Volts)
            B =  Flux density (Wb/m^2)
            l  =  length of the conductor (m)
            v =  velocity of the conductor (m/s)
2.THUMB RULE
It states that "If the fingers of the right hand are placed around the wire such that the thumb points in the direction of current flow, the fingers will be pointing in the direction of the magnetic field produced by the wire."



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