Fact 1: Electric devices require electrical energy to function.

Fact 2: Electrical energy refers to energy associated with the flow of electrons.

Given the two facts above, answer the question "What uses the flow of electrons?" with the following options: 
- Typewriters
 - hydrogen and oxygen
 - an electron microscope
 - Electric devices
 - Manual devices
 - Bodies of water
 - circulatory systems
 - an electron lens


 

    Electric devices     