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 Faradays Law and Lenz's Law

Definitions

Faraday's Law of Induction

Three Ways to Induce EMF

Changing the Magnetic Flux

Lenz's Law

 

Definitions

FB (pronounced phi) is defined as the magnetic flux for a uniform magnetic field

 

FB = BperpA = BAcosq     where Bperp is the component of B perpendicular to the loop of area A and q is the angle between B and a line

perpendicular to the loop

 

     
The angle theta, q q = 90 degrees, flux is minimum (cos q = 0) q = 0 degrees, flux is maximum (cos q = 1)