Induction Cooktop Physics
The changing magnetic field induces eddy currents in metallic cookware.
Induction cooktop physics. If the magnet doesnt stick they wont work with induction. An induction cooktop a cooktop is called a hob in european countries is simply an electromagnet you can cook with. In our latest appliance science column we look at how induction. Michael faraday is given credit for the discovery of electromagnetic induction in 1831 though some others had noted similar behavior in the years prior to this.
The frequency is tuned for the size of the pot material and depth to penetrate the material. By induction thats how. If you touch them with a magnet and it sticks to the bottom of the pan they can be used on an induction cooktop. With suitable cookware the heating power from those ddy currents is bigger than the amount of heat directly generated in the coil so the inductive system can be very efficient at transferring heat directly to the cooking pot.
The principle of the induction stove working is not very complicated. If you can remember the basic principles of school physics curriculum you will easily understand how induction cooktop works. The formal name for the physics equation that defines the behavior of an induced electromagnetic field from the magnetic flux change in a magnetic field is faradays law of electromagnetic induction. Well also lift the lid on what you should know before buying installing or working with induction cooktops.
How can an electric field cook your dinner. Many pan manufacturers are also now introducing a special mark on the pan that shows they are suitable for use on an induction cooktop. It consists of a tough heat resistant glass ceramic plate on which the user places pots and pans that need to be heated. Induction cookers are a great example of electromagnetism in action.
Before we get to that lets take a look at the benefits of induction cooktops and the surprisingly simple physics of electromagnetic induction. Whats more the induction effect is also restricted to the area directly above the cooktop. If you try using a pot thats larger than the coil the water will start boiling from the area directly above the coil. An induction cooktop looks like any other ceramic cooktop with different zones for placing pans and pots of varying sizes.
Inside the glass cooktop theres an electronically controlled coil of metal. The hot physics of induction cooktops. The alternating current in a coil under the cooktop makes an alternating magnetic field.
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