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by masklinn
1322 days ago
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I guess you could have a hot spot on the pan if the coils are ill-designed or you’re putting a large pan on a small burner? The pan will only heat up near the coil, so if the coil covers only the center third of the pan, only that will heat up (though some pans have a heat-spreading layer to mitigate this, and sometimes to add some more inertia depending on the pan’s purpose). |
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Yes, but then it’s hardly a problem with the technology if you put a large pan on a small burner.
As for the rest, in all cookers I have seen, the coils cover the whole surface, except for a small spot in the centre. Besides, induced current does not happen only where the cookware is closest to the coil. The magnetic field is more spread out than that and the heating surface is larger than just the surface of “contact” (there is no real contact, but anyway).
I assume there could be an exceptionally badly designed induction cooktop with hot spots (it’d have to have a very weird geometry, though), but that would take some effort.