This is probably the most common way for an oven element to go bad....a spot in the element gets weak ( may even glow brighter in that spot before the element actually quits ) and blows a hole through itself and the outer shell. This sparking/arcing may remind you of an sparkler you use on the 4th of July ( USA ) or Victoria Day ( Canada ). If this happens to your oven element = new element time.
Tips on changing a common bake element
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