Relationship Between Current and Voltage in Circuits With Real-Life Analogies

in brief, is there a relation between current and voltage? 
and can anyone explain to me how current and voltage is going on circuits by any analogy of real life? thanks alot.

There is no relation between current and voltage. You can have a high voltage and only a very small current will be flowing in the circuit. Or you can have a high voltage and a very high current will flow in the circuit. There is no fixture between these two values.
However, when you have a voltage, there must be at least a tiny amount of current present. Even if it is a micro-amp. That's the only requirement between these to items (parameters)
But it is slightly different when you talk about CURRENT as the first item in the discussion.
When you have a current, only a very small amount of current will flow when the voltage is small. As you increase the voltage, a larger current will flow. In other words, the voltage will control the amount of current that will flow.
That's the basics of current and voltage.
Voltage can be HIGH or SMALL and the current can be LARGE or SMALL.
BUT when you have a CURRENT, it will only increase when the VOLTAGE INCREASES.
In other words, the VOLTAGE will allow the current to increase, but a CURRENT has no effect on the VOLTAGE.
There is one more thing that comes into the relationship - one more thing that determines the maximum amount of current that will flow for a given voltage.
It is RESISTANCE. All circuits will have a value of resistance. The resistance might be very small. If it is very small, a very high current will flow, even when the voltage is as low as one volt.
There is a very simple connection between voltage, resistance and current. It is called Ohm's Law.
The simplest situation is: ONE VOLT will allow ONE AMP to flow when the resistance is ONE OHM.

I'm totally with you .. I'm still missunderstanding the concept of voltage and current, is there any link or something that analogy the voltage and current through the circuit?!

if so, then voltage is related to what? to branches of the circuit? how can I determine it on the circuit? and how can I determine how it will be distributed ?
what about the current, related by what?!!and how can I determine how it will be distributed ?

thanks alot

I disagree with Colin when he says "there is no relation between current and voltage" -- their is a direct relation called Ohm's law. However I don't think that's what Colin was trying to say -- what he was trying to say is that having a large voltage doesn't necessarily imply a large current and having a small voltage doesn't necessarily imply a small current. You can have:-- a small voltage and a small current
-- a small voltage and a large current
-- a large voltage and a small current
-- a large voltage and a large currentWhich of these combinations you have depends on the voltage you start out with and also on the resistance of the circuit. You ask for a real-life analogy. We can think of electrons "flowing" through a wire as being similar to water flowing through a pipe as illustrated below:

Some materials (like copper) conduct electrons very easily so we call them conductors. Other materials (like rubber) don't conduct easily, so we call them insulators. Every material, even copper, resists the flow of electricity a little bit -- we call this property resistance. Sometimes we want a component that does conduct, but not too much, In the same way that a narrowing of the pipe will constrict or resist the flow of water, so a "resistor" will resist the flow of electricity as illustrated below:
The relationship between voltage (also known as "electric potential"), current, and resistance is defined by Ohm's law (look it up on Google). I always think of this as V = I x R (voltage = current multiplied by resistance). If you know any two of these values you can work out the third. A useful trick to remember things is called "Ohm's triangle" as illustrated below.


Back to the real world example, suppose you take a 2-liter coke bottle, drink the coke, make markings on the side with an indelible pen, and punch a small hole in the side at the bottom as illustrated below.

Try to think of these markings as indicating 0 volts, 9 volts, and 18 volts. Now suppose that we fill the bottle with water to the 9V line and set things up as illustrated below:
The water will jet out through the small hole for a certain distance 'd'. Suppose you capture the water in a glass over some time 't'. We can think of the height of the water in the bottle as being the voltage, the area of the hole as being the resistance (well, the inverse of the area, because a larger hole equates to a lower resistance) , and the amount of water that passes through the hole each second as being the current.If you fill the bottle to the 18V line and repeat the experiment, you'll see that the amount of water coming out of the hole increases (if everything was "ideal" it would double, but this is a rough-and-ready setup).
If the hole is just a pin-prick, then you will only get a small amount of water flowing through it, even if we fill the bottle to the 18V line. Alternatively, if the hole is 1" in diameter, then we will get a lot of water flowing through it, even if we only fill the bottle to the 4V line.
If we keep the bottle filled to the 9V line and gradually increase the diameter of the hole (thereby lowering the resistance), the amount of water flowing will increase accordingly.I don't think I can explain things any simpler than this.

@ryan: "...what about the current, related by what?!!and how can I determine how it will be distributed ?..."Hi Ryan -- I don't want to be mean, but I'm starting to worry -- not about how little you know (we all start off knowing nothing) -- but rather how you don't seem to be able to grasp basic concepts, even when they are explained to you.Are you trying to learn all of this stuff on your own (in which case all credit to you)? Or are you taking a course? If the latter, have you asked your teachers any of these questions?

Electrical Voltage:Voltage, ( V ) is the potential energy of an electrical supply stored in the form of an electrical charge. Voltage can be thought of as the force that pushes electrons through a conductor and the greater the voltage the greater is its ability to “push” the electrons through a given circuit. As energy has the ability to do work this potential energy can be described as the work required in joules to move electrons in the form of an electrical current around a circuit from one point or node to another. Then the difference in voltage between any two points, connections or junctions (called nodes) in a circuit is known as the Potential Difference, ( p.d. ) commonly called the Voltage Drop.Electrical Current:Electrical Current, ( I ) is the movement or flow of electrical charge and is measured in Amperes, symbol i, for intensity). It is the continuous and uniform flow (called a drift) of electrons (the negative particles of an atom) around a circuit that are being “pushed” by the voltage source. In reality, electrons flow from the negative (–ve) terminal to the positive (+ve) terminal of the supply and for ease of circuit understanding conventional current flow assumes that the current flows from the positive to the negative terminal. Generally in circuit diagrams the flow of current through the circuit usually has an arrow associated with the symbol, I, or lowercase i to indicate the actual direction of the current flow. However, this arrow usually indicates the direction of conventional current flow and not necessarily the direction of the actual flow.