Our homes are full of devices - machines - that run on electricity, but we don't use electricity in our homes only. We need it in schools, hospitals, banks, factories, etc.. Electricity brings us health and comfort. For example, at home we use it for heating electric fires, irons and toasters.
We also use electricity to produce shaft i.e., power that we use to run electric motors. For example, washing machines, refrigerators and mixers use this kind of power. Also vehicles such as subway trains, trolley buses and electric locomotives have motors that run on electricity.
There are also some very special lamps that produce ultraviolet rays and infrared rays. We use both ravs in medical treatments. One of the most valuable and important uses of electricity is in producing X-rays. When we look at an X-ray, we can see the inside of the human body, and in this way the physicians, or doctors, can give a more accurate ; that is, correct, diagnosis of an illness. In other words, when a doctor looks at an X-ray he. can tell you what kind of an illness you have.
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