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Asked by 17th February 2009, 6:13 PM
Answered by Expert

At high a.c.  , transmission is done at low current , thus energy loss in the line wires due to heating ( directly proportinal to I2R ) will be drastically reduced i.e., the transmission losses will be low. Further , when the current is low, we can use thinner wire for transmission and thus we can save a lot on the cost of metal used for wire and huge support needed for laying the wires overhead to a long distance. So electrical power is generally transmitted over long distances at high a.c.

Answered by Expert 18th February 2009, 12:29 AM
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