Induction cooktops can produce a buzzing or humming sound during operation, and this is a normal characteristic of induction cooking technology. The buzzing sound is primarily caused by the alternating magnetic field created by the cooktop's induction coils.
When you place a compatible magnetic cookware (such as cast iron or stainless steel) on the induction cooktop, an electric current is induced in the cookware due to the magnetic field. This current then generates heat in the cookware, which is used for cooking.
The buzzing sound arises from the interaction between the magnetic field and the metal components in the cookware. The rapid changes in the magnetic field, typically in the range of tens of thousands of times per second, can cause vibrations in the cookware and result in the audible buzzing or humming noise.
The intensity and volume of the buzzing sound can vary depending on factors such as the specific cookware, the power level selected, and the design of the induction cooktop. In some cases, the noise may be more noticeable at certain power levels or with particular types of cookware.
While the buzzing sound can be a bit disconcerting for some users, it is a normal characteristic of induction cooktops and does not indicate a malfunction. If the noise becomes excessively loud or changes significantly, it may be worth having the cooktop inspected by a professional to ensure everything is in working order.