One day my mum was making something in the toaster and it sparked and broke.Do you know what could have happened?

Question: One day my mum was making something in the toaster and it sparked and broke.Do you know what could have happened?
- Keywords:
  experiment,
  science,
  technology
Asked by 466kvna44 to Colin on 10 Nov 2014.
- Colin Keogh answered on 10 Nov 2014:
  
  It probably short circuited (too much electricity sent to a place it shouldn’t have been) which fired the electronics in the toaster. Something could have damaged a wire, something might have fallen on it or a wire could have melted.

Question: One day my mum was making something in the toaster and it sparked and broke.Do you know what could have happened?