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Question

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

A
Induction heater
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B
Conductivity meters for non-magnetic metals
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C
Skin effect
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D
Coating Thickness Measurements
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Solution

The correct option is C Skin effect
Eddy currents are the currents induced in the body of a conductor when the amount of magnetic flux linked with it changes
(i) Induction furnace (heating effect of eddy current)
(ii) Dead-beat galvanometer (electromagnetic damping)
(iii) Electric brakes
(iv) Diathermy ( Strong 50 MHz A.C. passed through human body, also called deep heat treatment )
(v) Induction motor
(vi) Car-speedometer
(vii)Energy meter

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