State any two uses of eddy currents?

Answer:

Eddy currents are currents that circulate in conductors like swirling eddies in a stream. They are induced by changing magnetic fields and flow in closed loops, perpendicular to the plane of the magnetic field.

They arise when a conductor moves through a magnetic field, or when the magnetic field surrounding a stationary conductor is varying. To summarise, we can say that anything which results in the conductor experiencing a change in the intensity or direction of a magnetic field produces eddy currents.

Uses ofย eddy current

The two uses of eddy current are:

  • It is used in household current meters to measure power consumption.
  • It is used to check whether the material or surface has any discontinuities, fractures, or faults without harming the material.

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