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Homework Help: Why AC instead of DC for Electric Power Transmission?

  1. Apr 14, 2010 #1
    1. The problem statement, all variables and given/known data
    Explain why A.C. is used instead of D.C. to transfer electrical power from the generating station to the consumer.

    2. Relevant equations

    3. The attempt at a solution
    To reduce the energy lost in long distance transmission. To reduce costs involved in transferring electrical power over long distances.

    Above is the answer which I provided though the teacher said it wasn't specific enough and my answer should have included something about

    a) high voltage, low current
    b) transformers need changing magnetic fields

    Was wondering if anyone could help? Thanks very much :smile:
  2. jcsd
  3. Apr 14, 2010 #2
  4. Apr 14, 2010 #3
    Thanks very much Rajini,

    I'll take a look at that now.
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