Cooking Without Heat Transfer

Induction cooking uses induction heating to directly heat a cooking vessel, as opposed to using heat transfer from electrical coils or burning gas as with a traditional cooking stove. In an induction cooker, a coil of copper wire is placed underneath the cooking pot. An alternating electric current flows through the coil, which produces an oscillating magnetic field. This field induces an electric current in the pot. Which of the following cooking vessels is not proper to be used for induction cooking?

porcelain enamel pot cast iron pan stainless steel cookware heatproof glass pan

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2 solutions

Discussions for this problem are now closed

Anna B
Mar 3, 2014

Glass does not conduct electricity, so a current will not be induced in a glass pan.

Induction cooker uses eddy currents generated in a conductor which is a result of changing electric field. I understand glass is not a good idea, but how about porcelain? No eddy current would be generated in porcelain either!!

Vinit Shandilya - 7 years, 3 months ago

Porcelain enamel (I believe that's what the option was, not just porcelain) is powdered glass bonded to a metal. So if that metal if conductive (and it usually is), induction cooking will still work with porcelain enamel.

Anna B - 7 years, 3 months ago

what about porcelain.will it conduct?

SHRISTI KUMARI - 7 years, 3 months ago

no.

Shrikant Pathak - 7 years, 3 months ago

Porcelain is an excellent insulator of heat as well as electricity. No eddy currents would be induced in it making it useless for induction cooking. Glass on the other hand is a better conductor as compared to porcelain at higher temperatures. Glass even at room temperature contains few free silicon atoms. But Porcelain would be totally useless.

Aman SIngh - 7 years, 2 months ago

Eddy currents are not produced in the glass because it is insulator having higher forbidden energy gap as compared to that of metallic conductors.

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