Recent content by anonyaway

A moving or rotating magnetic field does makes sense.For example let's take a charge q moving with velocity v in a magnetic field B. The force acting on it is q(vXB).Now if we start moving in the direction of v the velocity that we observe changes.Therefore the force on the charge qvB also...

...No I don't think that's what it is.I guess a nice way to interpret this would be to stand in a uniform magnetic field B along z direction(perpendicular) and then turn round and round and rotate with angular velocity negative .then from your perspective the field is rotating with angular...

Ok.got it.The force on Electrons ,q(v*B) is zero,as v,the relative velocity, is zero and therefore no EMF is generated.Therefore Emf=0.

Homework Statement :A metallic disc of radius R is placed perpendicular to a magnetic field B.Both the magnetic field and the disc rotate with an angular velocity w about the axis of the disc.Find the induced EMF between the center and the circumference[/B]Homework Equations Motional Emf=Bvl...