Fact 1: Aswitch is used to start the flow of current in an electrical circuit. Fact 2: Each switch is moved up for on, and down for off. Given the two facts above, the flow of current in what is moved up and down?
Pick from:
(i) an electrical storm
(ii) Veins and arteries.
(iii) mouth of rivers
(iv) a short circuit
(v) an electrical circuit
(vi) circulatory systems
(vii) bad wiring
(viii) a hydraulic system
(v)