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why tyre of train with electromagnetic breakes is an example for varying magnetic field in the case of varying area, in the the moving loop?

why tyre of train  with electromagnetic breakes is an example for varying magnetic field in the case of varying area, in the the moving loop?

Grade:12

1 Answers

Aziz Alam IIT Roorkee
askIITians Faculty 233 Points
8 years ago
If a solid conductor moves through moves through a magnetic field(constant or varying) then cuurents can also be induced in any closed loop in conductors.This is called as eddy conductors.
The induced eddy currents also generate a magnetic force that opposes the motion, making it more difficult to move the conductor across the magnetic field.This is the same mechanism used in electromagnetic brakes.

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