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What are eddy currents ?...

What are eddy currents ?

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Eddy currents: The circulating currents induced in a conductor when placed in a changing magnetic field are known as eddy currents.
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Explore conceptually related problems

What cause eddy currents?

Which of the following is not an application of eddy currents?

How eddy currents are produced? give two applications of eddy currents.

The eddy currents have both desitable and undesirable effects.

A metal disc is winging freely between the poles of an electromagnet, as shown in the figure. When the electromagnet is switched on, the disc comes to rest after a few oscillations. Explain why eddy currents are induced in the metal disc.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : If current is flowing through a machine of iron, eddy currents are produced. Reason : Change in magnetic flux through an area causes eddy current.

What is reverse current due to?

BETTER CHOICE PUBLICATION-ELECTROMAGNETIC INDUCTION-NUMERICAL PROBLEMS
  1. What are eddy currents ?

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  2. A magnetic field of 2xx10^-2T acts at right angles to a coil of area 1...

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  3. A small piece of metal wire is dragged across the gap between this ...

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  4. A copper rod of length 2 m fixed at one end is rotating with an angula...

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  5. A brass rod of length 3.0 m fixed at one end is rotating with angula...

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  6. A silver rod of length one metre fixed at one end is rotating with ang...

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  7. An e.m.f. of 250 muV is induced in a coil, when current in it changes ...

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  8. A wire of length 0.1 m moves with a speed of 10 "m/s" perpendicular to...

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  9. A coil of 100 turns and area 200 "cm"^(2) is placed at right angles to...

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  10. The magnetic flux passing through a coil changes from 6 xx 10^(-3)wb t...

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  11. The magnetic flux passing through a coil changes from 5 xx 10^(-2) w...

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  12. The magnetic flux through a coil changes from 4 xx 10^(-2) wb to 6 xx ...

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  13. A magnetic ifeld 2 xx 10^(-2)"wbm"^(-2) is acting at right angle to a...

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  14. A magnetic field of 4 xx 10^(-4)"wbm"^(-2) is acting at right angle to...

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  15. A magnetic field 5 xx 10^(-4)"wbm"^(-2) is acting at right angle to a...

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  16. A magnetic flux of 5 microweber is linked with a coil when a current o...

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  17. A magnetic flux of 5 microweber is linked with a coil when a current o...

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  18. The magnetic flux threading a coil changes from to 12x10(-3) Wb to 6x1...

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  19. What will be the coefficient of mutual inductance of a pair of coil if...

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  20. A wire is cut across a flux of 0.2x10(-2) weber in 0.12 seconds. What ...

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  21. A railway track running North South has two parallel rails 1.0m apart....

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