Difference in potential?

[EEC]

Using theory, explain what sum of the difference of/in potential of all the charges in an electroctatic field is refferred to as emf (voltage). Can you explain what are the electrons doing that causes a difference of/in potential. Please simplify

 

[beanland]

Editing

Editing

Can you edit your post to clarify and clean up mis-spellings?

If you are referring to electrostatics, then this is charge and potential requires a difference in charges. Two plates with the same number of free electrons will have no potential between them. Two plates, each with a different number of free electrons will exhibit a potential difference. EMF is electro-motive force, which is the measurement of current flowing between two locations across an impedance. As soon as you attempt to meaasure EMF, you discharge the charge difference. Unless there is a source of free electrons to restore the charge difference, EMF will become zero, like discharging a static electric charge.

 

[EEC]

Electrostatic Corrected

Electrostatic Corrected

Using theory, explain what sum of the difference of/in potential of all the charges in an electrostatic field is refferred to as emf (voltage). Can you explain what are the electrons doing that causes a difference of/in potential. Please simplify

Electrostatic

 

[EEC]

How can voltage be calculated from different amounts of charge?

How can voltage be calculated from different amounts of charge?

Can you edit your post to clarify and clean up mis-spellings?

If you are referring to electrostatics, then this is charge and potential requires a difference in charges. Two plates with the same number of free electrons will have no potential between them. Two plates, each with a different number of free electrons will exhibit a potential difference. EMF is electro-motive force, which is the measurement of current flowing between two locations across an impedance. As soon as you attempt to meaasure EMF, you discharge the charge difference. Unless there is a source of free electrons to restore the charge difference, EMF will become zero, like discharging a static electric charge.

Also you mis-spelled measure

 

[gar]

110105-1221 EST

An emf can exist without the flow of current.

See http://en.wikipedia.org/wiki/Electromotive_force for a discussion.

More formally, emf is the external work expended per unit of charge to produce an electric potential difference across two open-circuited terminals.[2][3] The electric potential difference is created by separating positive and negative charges, thereby generating an electric field.[4][5] The created electrical potential difference drives current flow if a circuit is attached to the source of emf.

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[jumper]

Also you mis-spelled measure

And you forgot a period and added an incorrect hyphen: Who cares?

 

[gar]

110105-1241 EST

EEC:

If you have a capacitor consisting of two parallel plates spaced X distance apart in a uniform medium and place a charge difference of 1 volt on this capacitor, then mechanically move the plates to 2*X apart what happens?

The capacitance decreases, but the charge does not change. Since Q = C*V, where Q is the charge, C is the capacitance, and V is the voltage, then as C gets smaller by moving the plates apart V must get bigger.

Thus, charge alone does not define voltage.

.

 

[rattus]

Using theory, explain what sum of the difference of/in potential of all the charges in an electroctatic field is refferred to as emf (voltage). Can you explain what are the electrons doing that causes a difference of/in potential. Please simplify

A force exists between positive and negative charges. To increase the distance between these charges requires force. If we integrate force x distance we obtain potential energy which may be expressed as "potential" difference in newton-meters. This potential may also be expressed in volts.

We speak of "lines of force" between the opposite charges, and these lines of force constitute an electrostatic field. The strength and direction of the electric field at any point in space is described--by a vector--not a phasor. A test charge placed in this field will experience a force.

A prime example of the electrostatic field is seen in a charged parallel capacitor. Another is "static cling".

 

[billsnuff]

Electrocratic

Electrocratic

this is a society where free electrons get a vote in the discharge of the duties. :roll:

 

[EEC]

High Potential and Low Potential

High Potential and Low Potential

Can you explain whats happening with free electrons in regards to high potential and low potential? Also is there a difference when using electron flow or conventional flow?

 

[wiigelec]

At the atomic level emf represents the force required to move valence electrons from their "original" nucleus to the shells of the electrons in the negative end of the electric field. This causes an overabundance of electrons at one end and a lack of electrons at the other which is not conducive to the natural state of the atomic energies. Remove the emf or give the electrons a path back absent the electric field and they will move back toward their original state creating "current".