Power and Energy
Energy is “the capacity to do work”.In this universe, there are many forms of energy, and by that energy, we can do different things. Energy can be found in many things and takes many forms. There kind of energy for moving objects is called kinetic energy. Potential energy is defined as the energy that is stored in an object when the body is in rest. We use energy to do work and make all movements. When we eat food our bodies converts the food into energy so as to do work. When we run or walk, we ‘burn’ energy in our bodies in the form of calories. Vehicles also transform energy into work. Work means to move or force applied to cause a displacement. There are different kinds of sources of energy that runs the various machines in the industries. Sun is the primary source of energy. every element store some energy, but much is lost along the way in the form of heat into the environment.
Much like energy, the word power is something we hear a lot. In everyday life it has a wide range of meanings. In the field of physics , it has a very definite meaning. "It is the rate at which work is done" or similarly, at which energy is transferred.The unit used to measure power is the watt which has the symbol W. The unit is named after James Watt. You have probably come across the word watt often in electrical appliances and electronic devices . The output of electrical components like light bulbs or stereos is typically expressed in watts.
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