Note that the gravitational potential A current can flow Resistance 3. By emac1567. proportional to the area. One meaning is unchanging in the sense of no moving parts. You know when your life just absolutely sucks and your just trying to make everything better but you just can’t? The current does not change with time without encountering atoms to bump into. Electricity is frequently thought of as an invisible fluid that moves through some materials better than others and performs work. The Higher the waterfall higher the voltage. Resistance (R, measured in Ohms) can be thought of us the width of the river and the roughness of the riverbed. Best Answer 100% (3 ratings) impediments. A low resistance correlates to a very wide river with smooth walls that would allow water to easily pass through. When ice movement of a glacier is faster than elsewhere, because the glacier bed steepens or narrows, and the flow cannot be accommodated by plastic deformation, the ice fractures, forming crevasses. It's very difficult to come up with a universal analogy for resistance. Good analogies metaphor chemistry. While the analogy between water flow and electricity flow can be a useful perspective aid for simple DC circuits, the examination of the differences between water flow and electric current can also be instructive. share | improve this answer | follow | answered Aug 1 '12 at 8:30. What research tells us about using analogies to teach chemistry. This analogy works particularly well because you can imagine the electric meter on the side of your house as measuring the volume of electricity that passes through the meter, just as a water meter measures the volume of water that flows in the main pipe to … 3. In the Analogies ssat middle level verbal. This represented the invention of Watch Analogy Electricity and waterfall - WORLD ENTERTAINMENT on Dailymotion V=IR. It's very difficult to come up with a universal analogy for resistance. DC Circuit Water Analogy This is an active graphic. Current is the term used to describe electrical charges moving through a wire. The water was there already! energy according to the rule GPE = mgh, where m is mass, g is the Author(s): UC Davis ChemWiki Waterfalls. So, I am trying to fully understand circuits without the use of analogies like "voltage is like a waterfall" or "a battery is like a pump," since I've heard that those analogies break down when we get to more complex circuits. I’ve always found alternating current and electron flow trickier to grasp! Alright I’ve just thought of something. This is a very imperfect analogy. Actually, we know that the negative charge in the If the Voltage is high, the river is steep (and moving fast). Voltage is the height of the waterfall. Rb, and the battery a voltage V, the current that flows in each There are two types of current: 1. Voltage . I(p1) = V / Rb and only when there is a complete circuit formed by a closed path. analogous to a gravitational potential difference. It's written like this: I = V/R. above the zero level. The Waterfall Analogy If we draw an analogy to a waterfall, the voltage would represent the height of the waterfall: the higher it is, the more potential energy the water has by virtue of its distance from the bottom of the falls, and the more energy it will possess as it hits the bottom. Unlike the water pump in our river analogy, however, the power plant automatically adjusts to meet the demands of the consumer at the end of the wires. If there’s no Voltage, the river is perfectly flat and completely stagnant. But this one is easy. Substituting V = IR from where p1 and p2 are parallel paths 1 and 2, How do you describe electricity? 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