How Does an Induction Cooktop Work?

How Does an Induction Cooktop Work? An induction cooktop is a modern kitchen appliance gaining popularity due to its efficiency, safety, and fast cooking times. Unlike traditional gas or electric stoves, it uses electromagnetic induction to heat cookware directly. In this article, we’ll explore how an induction cooktop works, its advantages, and key usage considerations.

How an Induction Cooktop Works

An induction cooktop operates using an electromagnetic field that generates heat directly in the cookware, not on the cooktop surface. The main stages of operation are:

• Power Source: Beneath the ceramic glass surface lies a copper coil. When the cooktop is turned on, an alternating electric current passes through the coil.
• Magnetic Field Creation: The alternating current generates an electromagnetic field that rapidly changes polarity (about 20,000–100,000 times per second).
• Heat Induction: When cookware with a ferromagnetic base (e.g., cast iron or steel) is placed on the cooktop, the magnetic field penetrates the base, causing electron movement in the metal. This generates heat due to the material’s resistance. Thus, heat is produced directly in the cookware, not on the cooktop surface.
• Temperature Control: Users set the desired power level via the control panel, and the cooktop’s electronics adjust the current in the coil to regulate heating intensity.

Importantly, the cooktop surface remains relatively cool, only warming from contact with the heated cookware, not from a direct heat source.

Suitable Cookware

Induction cooktops require cookware with ferromagnetic properties, meaning the base must interact with the magnetic field. Suitable options include:

• Cast iron skillets.
• Steel cookware with a magnetic base.
• Enameled pots with a ferromagnetic bottom.

Aluminum, copper, or glass cookware won’t work unless it has a special magnetic layer. To check compatibility, hold a magnet to the cookware’s base—if it sticks, it’s suitable.

Advantages of Induction Cooktops

Induction cooktops offer several benefits compared to traditional alternatives:

• High Efficiency: Up to 90% of energy goes to heating the cookware, while gas stoves lose much heat to the air.
• Speed: Water boils faster (e.g., 1 liter in 2–3 minutes compared to 5–7 minutes on an electric stove).
• Safety: The surface doesn’t heat without cookware, reducing burn risks. The cooktop automatically shuts off if the pot is removed.
• Precision: Temperature adjusts instantly, ideal for dishes requiring consistent heat.
• Easy Maintenance: The smooth ceramic surface doesn’t burn food residue, as it stays relatively cool.

Disadvantages

Despite numerous benefits, there are some drawbacks:

• Cost: Induction cooktops are more expensive than gas or traditional electric models.
• Special Cookware: Compatible cookware may require additional purchases.
• Noise: A slight hum from the cooling fan may be noticeable during operation.
• Electricity Dependence: Unlike gas stoves, induction cooktops are useless during power outages.

How Does an Induction Cooktop Work in Practice?

Imagine you’re making soup. You place a pot of water on the burner, turn on the cooktop, and select a power level (e.g., 1200 W out of 2000 W). The magnetic field instantly heats the pot’s base, and the water boils in minutes. If you remove the pot, the cooktop stops immediately—a built-in safety feature. After cooking, the surface remains warm only from contact with the hot pot but cools quickly.

Technical Features

Most induction cooktops operate on a standard 220–240 V power supply. A single burner typically uses 1.5–2 kW, with total power for a four-zone cooktop reaching 7–10 kW. Modern models include features like timers, cookware size detection, or a boost mode for maximum heating speed.

Induction Cooktops in Ukraine

In Ukraine, induction cooktops are increasingly popular, especially in cities where people value comfort and energy efficiency. Popular brands include Bosch, Electrolux, Gorenje, and more affordable options like Xiaomi or Ardesto. Prices range from 5,000 to 30,000 UAH, depending on features and the number of burners.

Conclusion

An induction cooktop is a prime example of how modern technology can make daily life more convenient and safer. Using electromagnetic induction, it heats only the cookware, saves energy, and cooks faster than traditional stoves. While it requires specific cookware and costs more, its benefits outweigh the drawbacks for those who value efficiency and precision in cooking. If you’re looking for an innovative kitchen appliance, an induction cooktop is an excellent choice!