A dryers heating element operates on the same principle as the coil in an electric heater. It consists of an uninsulated metal conductor, and when an electric current passes through it, it has resistance to the flow of the electricicty, and that heats the element up.Once the coil heats up a little to much, it burns out.
If the heating element in your oven breaks, the element itself can not be repaired.The element that breaks needs to be completely replaced which is a relativey easy process and can be done quickly. Heating elements can break and burn out easily, but most of them can be replaced. If the heating element is hard to remove you will have to replace the entire appliance.