Question

Why does AC circuit doesn't loss energy like how DC do?

Answer 1

Conceptually you do not lose energy with A/C because you can induce it through a change in magnetic field, while D/C requires you to continually add more energy.
Did you have a specific example in mind?

Answer 2

Hi hei, this is a great question, tnx for the opportunity to look into it.
U can read about it here
http://en.wikipedia.org/wiki/War_of_Currents
The part about Transsmison loos explains it

Now, to it.
First of all this question was a deal of conflict between Tesla and Edison, Tesla understood the advendejes of Ac, and edison didnt or maybe wanted a reason to build more power plants. The thing is that Ac is easily converted from one voltage to another with a set of two coils. That means that u can send out AC in high voltage, and convert it to low voltage close to people houses. The power in this convertion stays the same (with sime minimal losses). But dc isn't easily converted.

Power loss is propotional to the current squared (Joule's laws thats for ac and dc) . But power is propotional to the current * voltage. So if u Increase the Voltage and lower the current u get the same power, and less power loss. ! that was the idea of tesla! let us convert the electricity from high voltage to low voltage close as possible to the point of use, by this we keep losses minimal. (A/C has a lot of other qualities also).

Hope u enjoy it :)
At what age r u? why do u ask this?
Tnx again :)
Or

Answer 3

Thanks guys, i understand now : ), i am 17

Answer 4

thats nice I wasn't sure that my second paragrph was very readable.
and why r u asking about this?

Answer 5

So if a DC current with low ampere but high voltage, it ill lost less energy than DC current with high ampere but low voltage?

Answer 6

for my knowlge and according to jouls law and ohms law (thos were determind by experimints) that's a yes