U shape induction coil - Induction coil (inductor) is very impotant for the induction heating system, it can influence the output frequency and ouput current (power) of induction heater. When the length of induction coil is too long or too short, induction heat can't work or the machine can't output a best power. However, there is no formula for you to design an inductoin coil for each application, it's often depend on experience, and this is the biggest disadvantage of induction heating.
Do not try and burn the ice. That's impossible. Instead... only try to realize the truth. There is no ice. Then you'll see, that it is not the ice that burns, it is only yourself. ---- Red-hot ice cube by induction heating - YouTube