# potential difference

Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.
Related to potential difference: electromotive force, resistance

## potential difference

the difference in electric potential between two points in an electric field; the work that has to be done in transferring unit positive charge from one point to the other, measured in volts.

## Potential Difference

The potential difference between two points of a steady-state electric or gravitational field is defined as the work done by the forces of the field when a unit positive charge or unit mass, respectively, is moved from the point with the higher potential to the point with the lower potential. If Φ1 and Φ2 are the potentials at the initial and the final points of the trajectory of the charge or mass being moved, then the potential difference is u = Φ1 - Φ2, and the change in the potential is ΔΦ = Φ2 - Φ1 = - u.

The work done by an arbitrary electric field in moving a positive unit charge from one point to another is called the voltage between the points. In the case of a steady-state field, the voltage is the same as the potential difference.

## potential difference

[pə′ten·chəl ¦dif·rəns]
(electricity)
Between any two points, the work which must be done against electric forces to move a unit charge from one point to the other. Abbreviated PD.

## potential difference

References in periodicals archive ?
Meanwhile, combined with the basic data of spatial domain,the study divides the threshold value spatial heterogeneity interval of reverse spillover of OfDi from 2003 to 2013 with the utilization of the OFDI reverse spillover threshold and potential difference value,that is high area of reverse spillover(PD>18.
Moreover current can also be used as a control parameter, which can be used to control the potential difference applied to maintain a stable jet throughout the electrospinning process.
If B and C have different ground potentials, even though one may be the same potential of A, the power grounds would carry the voltage created by the potential difference.
In the case of the pile, any experimental measurement of its voltag e eliminates the dependence of that potential difference on the difference of [phi] values of the two metals.
In effect, a growing ice crystal acts like a battery, separating positive from negative ions to generate a potential difference across an ice-water interface amounting to 30 volts or more.
The potential difference is solely due to differences between the oxidized and reduced forms of the functional PPy layer.
Midge attacks are therefore localised and there is a huge potential difference in levels of attack, where attacks will occur and the timings involved.
The potential difference which can be made to our children's education and lives will depend on what replaces that which presently exists.
As a result, the potential difference between the pipeline and the surface earth can be significantly reduced.
When exposed to a mixture of air and hydrogen at room temperature, the device develops a potential difference of roughly 1 volt between its electrodes and generates a few milliwatts of power per square centimeter.
When a potential difference is applied between the two electrodes in a ceramic capacitor, it gets charged.
Part 1 Extracorporeal membrane oxygenator (ECMO) for 30 pieces, potential difference - 100%;

Site: Follow: Share:
Open / Close