When describing voltage, current, and resistance, a common image used is a water tank. In this picture, charge is represented by the water amount, voltage is represented by the water pressure, and current is represented by the water flow. So for this picture, remember: Water = ____ Pressure = ____ Flow = ____ Consider a water tank at a certain height above the ground. At the bottom of this tank there is a hose. The pressure at the end of the hose can represent ____. The water in the tank represents ____. The more water in the tank, the ____ the charge, the more pressure is measured at the end of the hose. We can think of this tank as a ____, a place where we store a certain amount of ____ and then release it. If we drain our tank a certain amount, the pressure created at the end of the hose goes ____. We can think of this as ____ voltage, like when a torch gets dimmer as the batteries run down. There is also a decrease in the amount of ____ that will flow through the hose. Less ____ means less water is flowing, which brings us to ____. We can think of the ____ of water flowing through the hose from the tank as current. The higher the pressure, the ____ the flow, and vice-versa. With water, we would measure the volume of the water flowing through the hose over a certain period of ____. With electricity, we measure the amount of ____ flowing through the circuit over a period of time. Current is measured in ____ (usually just referred to as "Amps"). An ampere is defined as 1 Coulomb of charge passing per second through a point in a ____.

Electricity Water Tank Analogy

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