Yes, a cast iron pan can work on an induction cooktop. Induction cooktops use magnetic fields to heat the cookware directly, and since cast iron is a ferromagnetic material, it can effectively transfer the heat from the induction surface to the pan. The magnetic properties of cast iron make it compatible with induction cooking.
When using a cast iron pan on an induction cooktop, it's important to ensure that the base of the pan is in direct contact with the cooktop surface for efficient heat transfer. Induction cooktops require a good magnetic connection between the pan and the cooking surface to generate heat. Additionally, be cautious when moving or lifting the cast iron pan, as it can be quite heavy.
Remember that cast iron pans retain heat very well, so they may continue to cook food even after you've turned off the induction cooktop. Take appropriate precautions and use oven mitts or pot holders when handling the hot pan.