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November 01, 2025, 09:53:34 am
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Author Topic: AC vs DC  (Read 787 times)  Share 

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AC vs DC
« on: August 03, 2011, 02:44:30 pm »
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When transmitting electrical power, why is it that AC power is used?

I think it has something to do with the current changing direction.
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xZero

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Re: AC vs DC
« Reply #1 on: August 03, 2011, 03:14:33 pm »
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Hint: transformer
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Re: AC vs DC
« Reply #2 on: August 03, 2011, 03:16:09 pm »
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AC current is only compatible with transformers?
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appianway

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Re: AC vs DC
« Reply #3 on: August 03, 2011, 03:23:49 pm »
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Well, presuming your choice is between a constant voltage DC source and an AC source (usually sinusodal), yes. Think about induction - you need to have a change in flux, which means you need to have a changing current.
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