Question

what are direct and alternating current? why is alternating current preferred over direct current​

Answer 1

Answer:

Alternating Current (AC) is a type of electrical current, in which the direction of the flow of electrons switches back and forth at regular intervals or cycles. ... Direct current (DC) is electrical current which flows consistently in one direction.

•It is easy to maintain and change the voltage of AC electricity for transmission and distribution.

•Plant cost for AC transmission is much lower than the equivalent DC transmission

•It is easier to convert AC to DC.

Answer 2

Answer:

1. Alternating Current (AC) is a type of electrical current, in which the direction of the flow of electrons switches back and forth at regular intervals.

2. Direct current (DC) is an electrical current that flows consistently in one direction.

=> Alternating current is cheaper to generate and has fewer energy losses than direct current when transmitting electricity over long distances. Although for very long distances (more than 1000 km), direct current can often be better.

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