# current

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#### Praveengupta

##### Guest
in voltage what charge are prensent

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#### Mee_n_Mac

##### Guest
Praveengupta":2un60u63 said:
in voltage what charge are prensent
I think I can speak for us all and say "huh ?".

What are you trying to ask ? A current is defined as the movement of charges, they can be either negative or positive and it's still called a current. I'm not sure what your question regarding voltage might be.

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#### 5hot6un

##### Guest
Voltage is the difference in potential electric energy between A and B.

One way to think of voltage is that it is like water pressure in a water pipe.
The pressure on the pipe is the amount of potential energy available to move the water through the pipe. Similarly, voltage is the potential energy available to move electrons trough a conductor.

When you ask about charge, you are inferring a question about current. In the pipe analogy, current would be the water flowing through the pipe, and charge would be the direction of that flow.

Basic Ohm's law states at Voltage (V) = I*R where (I) is current and (R) is resistance. Power (W) also has a place in this algebraic relationship. V=W/I or V=(W*R)2 or...

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#### origin

##### Guest
In normal circumstances, if there is a voltage difference, say between the - and + terminals of a battery and you were to connect them to a wire then there would be a flow of electrons (-) through the wire.

Is that what you are asking?

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