Oven bake heating element with push-on wire terminals. If the oven won't heat, the bake element may have burned out. Often, if the bake element has burned out, it will be visibly damaged.
6-inch electric coil surface element with looped terminals, 1250 watt, 4 turn. If the surface element does not have continuity (an unbroken electrical circuit), the surface element won't heat.