What are the advantages of a smelting furnace using induction heating, and will it reduce costs?
The electromagnetic field produced by the electromagnetic oven causes the eddy current at the bottom of the heating pot to produce heat, so the D is wrong. Therefore, AC.
The A option shows that the B error; C, the eddy current in the pan is related to the frequency of the magnetic field changes, so C is correct;
On the surface of the electromagnetic oven if made of metal material, the use of the electromagnetic oven, the upper surface of the material to the loss of power electromagnetic induction, electromagnetic oven on the surface to be made from insulating material, the heating part is at the bottom of the pot, right A;
