Water model for electric circuits
Battery --> pump; wires--> pipes; useful elements --> a paddle wheel that turns when the water is flowing
important electric quantities: current, charge and voltage
important quantities for water flow: flow rate, water, height
current --> flow rate; charge--> water; voltage--> height
flow rate: water quantity/time; electric current: charge/time
units for electric current: C/s--> Ampere (A)
DIFFERENCES: break in the electric circuit stops the current (not in the water model); in electric circuits both type of charges can move in opposite direction (water flows in one direction only)