Can anyone explain this? #Inducemagnetism

in #science7 years ago

This is said to be the effect of #Len'z law where this phenomenon causes drag to Electric motors and Generators it also happen inside the transformer core that is said to be the reason why we can't get 100% efficiency of any machine in this case an electrical machine.

Can anyone explain how this work?

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I will try.
Since there's a change in magnetic flux as the magnet passes through the pipe, current gets induced in the copper pipe, which in turn produces a magnetic field in opposite direction to that of the magnet.
Hence, it slows down.
If you still do not get it, there are a lot of you tube videos you could watch.

Thank you singhbinod08...

So the magnetic polarity induce, should be repulsive...??? Is, there a, way, we, convert it into, attract, tive force..??

There's a way. Just move the metal away from the field.
And the force will be attractive. Though the action is still opposing to the field.

Thank, you... Now i, understand.

I am wondering if iwill cut the copper vertically to have to ends of it and connect to meter if how much voltage , it can generate.