Answer / nvnkmr

alternating current produces alternating magnetic flux inside and around the conductor. this flux produces counter emf to oppose the change in current. this effect is more at the center of conductor. so electrons tend to flow through surface. In DC there will not be any alternating magnetic field and so no Skin effect is not observed.

Answer / ravi rathod

In ac system the flux density inside the conductor is zero so due to alternating effect the outer surface carry the current but in case of dc no alternating effect is shown

Answer / kishore

skin effect is because of rms current flowing through the conductor. ac current flows through the surface of the conductor where as in case of dc conductor it is not surface current.

Answer / k.prakashchandra

Because, the self inductance is more in the center

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