The fact that current density is higher at the surface when compared to the centre is known as

A. Skin effect

B. Proximity effect

C. Corona effect

D. None of the above

Answer: A. Skin effect

Explanation:

In skin effect the eddy current causes the electron to be repelled towards the outermost surface of the conductor.

Repelling the electron towards the outer surface of the conductor increase the conductor resistance.

Due to the skin effect, the area of the current flowing path is reduced.

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