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Eddy currents are produced in a matteria...

Eddy currents are produced in a matterial when it is

A

A metal body is kep in a time varying magnetic field

B

A metal body is kept in the steady magnetic field

C

A circular coil is placed in a magnetic field

D

Through a circular coil current is passed.

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The correct Answer is:
B
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Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.

Assertion : If a varying current is flowing through a machine of iron, eddy currents are produced. Reason : change in the magnetic flux thro' an area causes eddy currents.

PHYSICS GALAXY - ASHISH ARORA-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-Conceptual MCQs
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  2. In a given solenoid if the number of turns and the length of the solen...

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  7. Identify the incorrect statement. Induced electric field

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  13. In a series RLC circuit, the fequency. Passing through a coil as shown...

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  14. A magnet is made to oscillate with a particular frequency, passimg thr...

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  15. Which materials have negative value of magnetic susceptibility?

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  19. If v alue of R is changed in the series RLC circuit shown in figure-5....

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