1) I don't understand why current flows, for example when you have a source, it has 2 poles, + and -: then the electron should go towards +, if it's in the position 'D', it should just be stuck -- my theory is that because the electron that's in 'A' "enters the battery", so the battery has excess of electrons (because of ion travel and all that), and it pushes that electron in 'D', which again pushes the first electron mentioned... OR the small el. potential on + side of the battery only works in one direction, that is, it attracts the electrons in 'D' area THROUGH the wire around (A, B, C ... D)? 2) In my book it says that when you connect two amp-meters in a circuit e.g. before and after a resistance (a light bulb), both will show the same current intensity, [itex]I_1=I_2[/itex]. I cannot understand this. Is it actually because the real resistance is caused by electrons themselves because electrons repel each other, and if the first electron (that's in the resistor) slows down, the one behind him does too? Then the whole circuit 'slows down', because when electron finally exits the resistor it wants to reach + but cannot because of the electrons in front of him (that are slow because...)?