All circuits have common traits

• All circuits have common traits

• Pressure = Voltage E
• Flow = Current A
• Restriction = Resistance R

• Using the water hose analogy, how these traits relate can be easily understood (E=I*R)

• With a water hose attached to an outlet, the valve acts as the pressure, the hose size as the restriction, and the water is the flow
• Turn the valve on half a turn, pressure, and water flow are present
• Turn the valve to full turn, pressure doubles, and water flow also doubles
• Now if someone steps on the hose allowing only a quarter flow of the water through, pressure also will drop, but the amount/flow of water will be the same (just slower because of the restriction)