science

Depends on the quality of the stove. The bad ones regulate like most resistive glass ceramic stoves in on/off pulses, which is fine for ceramic because the thermal capacity smoothes everything. I've got a mobile induction plate like that tho and it is absolutely horrible to work with.

My decent quality stove top goes from just hand warm (keep warm function) to the fires of mount doom (power function for boiling water) in 17 silky smooth steps. On top of the pulses there is some power regulation as well (you can hear the coil hum change depending on power).