Question

what are Eddy currents . Give an experiment to explain this their origin.?​

Answer 1

Answer:

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What are Eddy currents ?

Give an experiment to explain this their origin.?

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$\Large\bold\star\underline{\underline\textbf{Eddy currents\:}}$

→ Eddy currents are the circulating currents which are produced in a conductor when the magnetic flux linked with the conductor changes.

» This current leads to the heating of the conductor and hence energy is lost.

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→ Note : Check the necessary picture also that is related to the ans (provided with answer)

→ Consider a solenoid connected to the source of alternating current. Let an aluminium disc be placed an coil. The alumihium disc remains placed on the column when the switch 'S" is off.

→ When the current is allowed to pass through the solenoid, the disc is thrown up. Current is induced in the disc which is eddy current. This induced current produces a magnetic field which opposes the growing magnetic field of solenoid. Thus the disc jumps up.

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Hope it helped u.

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Answer 2

Eddy currents (also called Foucault's currents) are loops of electrical current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field.