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The main advantage of alternating current (AC) over direct current (DC) is safety.

DC locks you onto the current AC throws you away as it alternates.

AC was invented by Nikola Tesla.

Another advantageis that it may be transformed to a very high voltage for transmission over great distances. By doing so the losses due to line resistance are reduced since the current, for a given power, is reduced in inverse proportion.
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14y ago

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