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    What does this mean? the current changes direction it says in my book. but that cant be correct. ive been told its to do with EM induction and the magnetic field. can someone please explain in GCSE laguage? Also can you explain DC?
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    hello? HELP ME!
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    yeah,Ac means that electrons moves in both direction one way once and then the otherway,it's alternating the current in your house is AC
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    (Original post by r0manticide17)
    What does this mean? the current changes direction it says in my book. but that cant be correct. ive been told its to do with EM induction and the magnetic field. can someone please explain in GCSE laguage? Also can you explain DC?
    I think power stations and homes use alternating current because they have the ability to be stepped up or down by a transformer...
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    (Original post by r0manticide17)
    What does this mean? the current changes direction it says in my book. but that cant be correct. ive been told its to do with EM induction and the magnetic field. can someone please explain in GCSE laguage? Also can you explain DC?
    Alternating current does mean that the current changes direction. As you probably know from GCSE physics, the frequency of a mains supply is 50Hz (in most places). As the mains supply is AC, that means that the current flips back and forth 50 times a second i.e. 0.02 s going in one direction CHNAGE DIRECTION 0.02s electrongs going in other direction.

    Direct Current is simply the opposite.... All the electrons are going in the same direction all the time!

    Simple no?
 
 
 
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