You are presented with the question "A switch is used to start the what of electric charge in an electrical circuit?" and the following answer choices: 
- emptying
 - O3
 - copper
 - flow
 - motion
 - stasis
 - deletion
 - energy

Now knowing that aswitch is used to start the flow of current in an electrical circuit and an electrical current is the flow of electric charge, choose the best answer.


 

    flow     