In this circuit which wire is live and which is negative?

power source--------------------------------component
|
|
|
|
|__________switch____________________|

Edit: far right wire continues up to component
isn't there a rule, something like left is negative. i really don't know. and last lesson today was double physics..
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But then I could just draw the diagram the other way around though
Don't you need to specify on the power source? i.e. a voltage source is normally two parallel lines, one longer than the other, with the longer one positive and the shorter negative.
whichever one is connected to the negative terminal of the batter/powersource
batter=battery
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Last edited by mow_mow at Nov 27, 2008,
also, electrons flow from the negative end to the positive end, so technically the negative wire is the live wire.
i always come to UG for a tab, but get sucked into the pit

[SoWrongItsMatt]Have you tried, "Sex on fire?"

[[x]Huffy[x]]Either way I'm gonna be too stoned to care.

what he said.^

i love qotsa

mymusic
enjoy it.
Its a thing for a cigarette lighter in a car that I'm wiring up and I don't know which 1 is the positive part and which 1 is the negative. 1 wire goes to the little clip that you push together to slide it in and the other wire goes to the metal on the end.
Yeah, you need to specify what your power source is and which side of it is the negative terminal.

It would be easier if we could see exactly what the picture is...
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but it aint house music that makes me want to dance.
it could be either one, that diagram isn't specific enough,
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Convention is that the switch (and any fuses) goes on the live side.

Although, the question is confusing. do you mean positive and negative, or live and neutral?
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Quote by david_safc
Its a thing for a cigarette lighter in a car that I'm wiring up and I don't know which 1 is the positive part and which 1 is the negative. 1 wire goes to the little clip that you push together to slide it in and the other wire goes to the metal on the end.

The center of it is the positive, and the part around the lighter or the "little clip" is the ground/negative.
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but it aint house music that makes me want to dance.
Thanks.
so biff what's to be a buff
Wire connected to the component through the switch is the live wire.