What frequency is used in induction heating technology?

Induction heating technology typically operates at a range of frequencies, but commonly falls around 20 kHz to several megahertz, which is significantly higher than the options provided. Among the choices given, the frequency closest to typical industrial heating methods is 39 Hz. This frequency can facilitate the induction heating process by creating a suitable magnetic field that penetrates the material to be heated.

In induction heating systems, lower frequencies are often used for larger items that require deeper heating, while higher frequencies are applied to smaller components or surface heating. Frequencies around 39 Hz can still be applicable in certain contexts within induction heating applications, especially in traditional or older systems. Understanding these principles helps in recognizing how different frequencies interact with various materials during the induction process.