Question

Define alternating current and direct current. Explain why alternating current is preferred over direct current for transmission over long distances.

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Answer 1

Here is ur answer⤵

Define alternating current.

ans)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.

Define direct current.

ans)Direct current (DC) is electrical current which flows consistently in one direction.

Explain why alternating current is preferred over direct current for transmission over long distances.

ans)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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Answer 2

Answer:

As seen in the first equation, the power lost through transmission is proportional to the square of the current through the wire. ... This is why alternating current is preferred over direct current for transmitting electricity, as it is much cheaper to change the voltage of an alternating current.

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