Question

In a long distance power transmission, we usually need to use a transformer to step up the voltage ti a very high value. What are the three physics reasons for this ?

          In a long distance power transmission, we usually need to use a transformer to step up the voltage ti a very high value. What are the three physics reasons for this ?
        

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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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In a long distance power transmission, we usually need to use a transformer to step up the voltage ti a very high value. What are the three physics reasons for this ?
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Transcript

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00:01 In this problem, we have to describe the purpose of transmitting the power at a very high voltage.
00:10 So as we know that wherever the current is produced at the power plants, that current is generally produced at high voltage.
00:18 Reason being that when the voltage being produced are induced, that is to be transferred to a very long distance using the wires.
00:29 So although this wire is having lesser resistance, but in this case even there will be some form of voltage which will be dropped per unit length of this wire.
00:41 So as the voltage is being dropped, that means there will be some change in voltage per unit length...
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