Question

Skin effect is shown by

• A. DC
• B. AC of frequencies < ${10}^3$ Hz
• C. AC of frequencies > ${10}^6$ Hz
• D. any frequency signal

Answer 1

The correct option is C AC of frequencies > ${10}^6$ Hz

Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor. The skin effect causes the effective resistance of the conductor to increase at higher frequecies where the skin depth is smaller, thus reducing the effective cross-section of the conductor.