Lenz's Law

cant understand ...god i hate my teacher worst in the univers

Lenz's Law: the flux (net # of field lines) through the loop TRY to stay constant, & the induced current in the loop creates a new field/flux to oppose the change that created it. (Direction of the lines is also important.)

When the external lines get closer together, the field is getting stronger. The induced current in the coil crates a filed through the loop in the opposite direction of the CHANGE. Weakening field-> opposite current.

2nd part = changing geometry

When you expose the loop to an field, a current is induced on the loop, to generate an opposite field, so everything is "stable"

a drop in the electromotive force corresponds to the rate of change of magnetic flux in the opposite direction when the electromotive force remains constant, no magnetic force is produced...faradays law of induction :)

The 2 moving points on the graph seem to at the same level at 0:11 and 0:14. Is this of any signifigance?

yes indeed, that is because the electromotive force remains constant, then no magnetic field is induced, notice that as soon as the electromotive force increases a changing magnetic field occurs in the opposite direction and vice versa when the disk is oriented parallel to the x-axis and a sharp electromotive force applied induces a magnetic field as soon as the emf drops then a field is created in an opposite direction, causing it to rotate, polarity shifts and this is known as AC current :)

Is it lenz's law or faradey's law

It is Faraday's Law, which tells us about how the rate of change of flux is related the induced EMF/current. It is also Lenz's law which specifies the direction of the induced EMF/current. I've identified this as Lenz's law in the title because that is what I am emphasizing when I use this animation in class.

U have to see how many vektors of B(magnetic field) in the small constant area change or path thru , flux= magnetic field times Area , as B is constant and area too . the rotations about an axis changes the flux , soo an induced magnetic field exists in a way to let the magnetic flux constant , this means the induced magnetic filed tends to decrease or increase the magnetic field ! , since we have a closed circuit , an induced current will exist and EMF (electromotiv force ) exists too .

Looks cool, I have no idea what this is about but now it is as clear to me a mud.

Thanks for trying anyway.

Harry Callahan said "A man's got to know his limitations."

Thanks for the interesting post.

I'm gonna go away now.