Question

what is eddy current.explain minimum in 100 words.

Answer 1

The word eddy literally means that it is a circular current.These are the loops of electrical current induced within conductors by changing its magnetic field.These are produced by taking a solenoid that has soft iron core and connect the solenoid to an source. when a metallic disk of is held over the cross section of the face of soft iron core the metallic disk will be thrown into the air. when current flows through the solenoid magnetic flux linked with the solenoid increases the flux from zero to finite value.This change in magnetic flux gives rise to induced currents in the disc.The upper face of the soft iron core attains the same polarity as the lower face of the disc hence the disk is repelled by the soft iron core and thrown up in the air.hence when the conductor is kept in a change in magnetic field currents are induced in the body of the conductor these are the currents taht occur in very small loops and that are called eddy currents.