Question
Download Solution PDFSkin effect is observed mainly in __________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSkin effect
- The skin effect is a phenomenon that occurs in alternating current (AC) systems, where the current tends to flow primarily on the outer surface or "skin" of a conductor, rather than being uniformly distributed throughout its cross-section. This effect increases with the frequency of the AC signal.
- When an AC flows through a conductor, it generates a time-varying magnetic field around the conductor. This varying magnetic field induces eddy currents within the conductor itself, which oppose the original current due to Lenz's Law. As a result, the current is "pushed" towards the outer surface of the conductor.
- The effect increases with higher frequency.
- Induction heating works by inducing eddy currents in a conductive material using high-frequency alternating magnetic fields.
- Due to the skin effect, these eddy currents flow near the surface of the material, generating heat primarily in the outer layers.
- This makes induction heating highly effective for surface heating, hardening, and metal processing.
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