Sunday, February 12, 2012

If high voltage is dangerous, why are there transformers that step up the voltage exiting power plants?

A. so that the voltage will be at a level that is usable in houses and businesses B. so that the electricity can travel farther more efficiently C. because alternating current must travel at a high voltage D. to regain the 65% power lost in the power plantIf high voltage is dangerous, why are there transformers that step up the voltage exiting power plants?B. it takes voltage to travel long distances and at normal power. it would never make it to the houses.If high voltage is dangerous, why are there transformers that step up the voltage exiting power plants?Electrical distribution is all about delivering power to houses...

The equation is P = I x E...

That is - Power equals Current times Voltage...

To send a lot of power over relatively small diameter wire it would be better to have the voltage high so the current can be low...

For instance, say you want to send 1,000,000 Watts of power - enough to power 1,000 homes...

That would require a current of 10,000 Amps at 100 volts...

But at 100,000 Volts the current would be only 10 Amps...

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