![]() Let's say you increase the diameter of the hose and all of the fittings to the tank. The same is true of an electrical system: Increasing the voltage will make more current flow. What happens if you increase the pressure in the tank? You probably can guess that this makes more water come out of the hose. Let's say you have a tank of pressurized water connected to a hose that you are using to water the garden. If you are interested in the history of science, and how the scientists lived as real people in real eras you learn about in history, you might like to do a project on one of these individuals.Let's see how this relation applies to the plumbing system. Wonder where the names amps, volts, and watts came from? They are named after people who discovered them. Volts and watts are usually a little easier to incorporate than amps. Go to an appliance store and note the difference in kilowatts for the different appliances.īegin to use the terms amps, volts, watts in ordinary conversation. Household electrical use is often measured in kilowatts or 1000 watts. The scientific definition is one joule per second. It is the amount of power produced or electricity consumed. It has as much force as 6 of your cylinder batteries. But if you put two batteries in a flashlight, you will have 3 volts. Even though an AA battery and an AAA have the same volt (or force) they have different sizes and different amounts of electricity generating metal, so they don’t last the same amount of time. It takes a lot more electricity to run your clothes dryer than your hair drier.Ĭommon cylinder shaped batteries like AA, AAA, C and D have 1.5 volts. Now look at the 220 volt plug on your refridgerator or washer and dryer. We can compare it to kicking (or throwing) a ball. ![]() That would increase the force of the flow. Imagine on the balloon experiment if you squeeze the balloon quickly between your hands. You might compare a large raging river with a small creek. We used the large and small straw and large and small balloon to help demonstrate force. ![]() It measures the FORCE or power of the electrical flow. The take home point is that amps is a scientific term that measures the RATE of electrons flowing in a current. It is not necessary for elementary age students to memorize the definition of a coulomb. The definition of coulomb is 6.25 X 10 18 electrons. The scientific definition for one amp is one coulomb per second. The quantity of air escaping the balloon per second could also be a rate described in amps. The quantity of water sent out of the straw per second could be measured in amps. Think about the straw and water experiment. Here is a comparison that makes it easier to understand: How many cars go by your house in a minute? The higher the ampere, the greater number of cars or electrons passing a single point. It describes the rate of the electrical current. Let's learn about these three important measurements.Īmps is short for amperes and refers to the rate of electrical flow. In this lesson we will learn three terms that seem similar but help us to define and measure power. Scientists have to be able to describe and measure things like force and power and work done.
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