When we add up the energy consumed by a computer, by a toaster, by an oven, by a refrigerator, by lighting, etc., at your place then you get energy consumption of all your equipment for a day. These are common appliances that we are using every day in our lives. For example, a computer consumes some power, the rate at which energy is drawn, and if we use the computer for so many hours, what is the energy consumption by this computer? We can do the same thing for a refrigerator, or we can do it for any other appliance that you use at home. Once we know the power, we can calculate the energy. We will also look at some of those calculations. And once we know the difference, we know that using power, we can calculate energy, or if we know the energy and time, we can calculate power. To be clear, that is the key concept in this lesson that I want you to concentrate on – power and energy. We will learn about the units in which we measure these forms of energy, and also we will get into a very, very important distinction between energy and power. So we will also learn about forms of energy.
There are different forms of energy that we use for example, we use electrical energy or mechanical energy, like moving a car, etc., and we need to know the units in which we measure these different forms of energy. This lesson is going to teach us about energy! What is energy, and with which units do we measure energy? We will learn about the commonly used units we use to measure energy. It looks like we are ready to go for lesson 1: Energy and Society.
0 kommentar(er)
