Magnetic Flux Density (1 Viewer)

[DigitalFortress]

why the fuck does Excel Study Guide say the formula for Magnetic flux density is
phi = BA cos theta.

should it not be BA sin theta?!?!?!?!?

 

[serge]

chances are you are using different thetas

as cos80=sin10... it depends where you incline from

generally i use BAcos like your diagram suggests,
and so does a uni textbook my sister uses