Electricity - Circuits... Please help!!?

Question

How do I know which switches (positive and negative) plug into things in a simple circuit. eg. a power supply, with a resistor, voltmeter and ammeter. Is there a simple rule for doing it? I thought positive was in, negative was out, but I dont think that is correct..

Please help! 10 points for best answer. Thanks in advance.

Answer 1

Electricity is a very dangerous thing, first of all, if you don't know well, don't try to do any thing alone.

Less knowledge is not good in this vast technology you try to get a person for practical instruction with theory of electricity.

In brief flow of current is called electric and direction of flow is mention the positive and negative.

Answer 2

get sum1 else 2 do it lol  

u have no knowledge

seriously

Answer 3

learn electricity before you go any further.

.