What is Voltage?

Question

I Mean what is it realy?

Answer 1

Its a measurement of electricity. If you look at most house-hold items, for example, they will tell you what amount of electricity needed to run in the way of what volt battery they need. Like most hand held radios need a 9 volt battery. Its an over simplified explanation but thats the idea

Answer 2

a measure for the flow of electrons from a high potential area to a lower potential one

Answer 3

you have several decent answers, and one bad one (the first one).

For a more detailed explanation, see

http://en.wikipedia.org/wiki/Voltage

Answer 4

VOLTAGE, or "potential difference", or the "pressure" applied to the "electrons" in order to produce "current" in a conductor. Current, being the "flow of electrons" through, the conductor. Think of it this way, A garden hose connected to a valve. With the valve closed, water can't flow, but there's pressure behind the valve.That pressure equals the voltage. Now, if you open the valve, and water flows, that flow represents the "electron current" through the conductor(hose), but the pressure is still present. Now, if you put a sprinkler on the hose, it would act as a lamp.

Sort of.

Answer 5

Good question...because you qualified it with..."what is it really"

and the answer is that no one really knows...

What they do know the other answerers have hit upon...you can describe it using math and current flow...etc..

But what really is voltage?  We observe that two like charged particles repel away from each other from their electric fields.

The analogy would be magnetic south poles repelling each other...

But what is it really?  Are there small particles flowing out from a positive charge that push on other small particles coming out of another charge?  (do magnets work the same way)?

Sorry to say you will not get this question answered because nobody knows what a force field REALLY is!

Answer 6

It's a measurement of the difference in potential energy between two points. Imagine a big hill with a ball representing electricity at the top of it. The voltage would be the height difference for the hill. A taller hill would result in a faster rolling ball eventually, just as a higher voltage = higher potential energy for electricity to flow.