Aswitch is used to start the flow of current in an electrical circuit, and each switch is moved up for on, and down for off. Given these facts, the flow of current in what is moved up and down among the following options:
- an electrical storm
 - Veins and arteries.
 - mouth of rivers
 - a short circuit
 - an electrical circuit
 - circulatory systems
 - bad wiring
 - a hydraulic system


 

     an electrical circuit    