Yes, you can use cast iron on electric coil stove, but there are some things to keep in mind. Cast iron is a very good conductor of heat, so it can heat up quickly and evenly on an electric coil stove. So if you want to cook food then try to lower the heat settings on your stove to avoid burning the food. Also, it is important to season your cast iron before using it. Seasoning helps to create a non-stick surface and prevents rusting.