A lot of ovens - even gas ones - have electric ignition, an oven light and sometimes an electric fan oven.
So: exactly what have you got? Make? Model?
Have you checked the electrical supply?
Has the breaker tripped in the electricity cupbpoard? that COULD suggest a failed fan oven element but really, we are fumbling in the dark unless you tell us exactly what you have
XXX
January 2016