Electrical current running through a wire causes that wire to heat up, and an electrical current is a flow of electrons. Given these facts, what can run through a wire causing it to heat up among the following options:
- flow of electrons
 - electromagnetic energy
 - flow of neutrons
 - kinetic energy
 - hydrogen and oxygen
 - chemical messengers
 - flow of protons
 - h2o


 

 flow of electrons        