Wiring and componentsQuestion 949 of 1506

What is the benefit of Litz wire at high frequency?

Its solid core makes the inductance higher by saturating.
Its ceramic insulation makes it a conductor.
Its fine insulated strands cut eddy currents inside the wire.
It carries DC with zero resistance.

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Correct answer: Its fine insulated strands cut eddy currents inside the wire.

The insulation between strands stops eddy currents from circulating through the whole cross-section.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 3.5: Inductor Quirks

Questions last reviewed: 18 October 2026

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