# potential difference

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## 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 ?
Potential differences in scores on the final examination (see Figure 5) were analyzed using an analysis of variance with test group and delay interval length as between-subject variables, with significance observed for each main effect and their two-way interaction, all F > 7.33, all p < .004.
Potential differences in scores on the cumulative examination were assessed using an analysis of variance with feedback condition and IR as between-subject factors.
Potential differences in mean scores (see Figure 3) were examined using a 3 (feedback group) X 2 (IR) ANOVA, with significance observed for each main and their interaction, all F > 17.92, all p < .001.
The empirical evidence will seek to identify and estimate the sign and response of asset price bubbles to interest rate changes, exploiting the potential differences in the joint behavior of interest rates and asset prices during bubbly episodes, in comparison to normal times.
Additionally, the potential differences between the intergovernmental agreement rules and the regulations are causing concern.
By focusing the measurements on the cities' hottest days, the researchers were able to collect more precise spatial patterns of temperature differences across a particular city while accounting for the maximum potential differences in temperature.
This proof of concept proposal is innovative because we will harness the perspectives from scientists from different disciplines, for example, from economics and computer science, to compare and contrast two school-based interventions that aim to prevent smoking uptake among adolescents (13/14 year olds) in the UK and in Colombia - a LMIC and high income setting where smoking rates and norms are different - in order to reveal potential differences in the social norms-based mechanisms of action.
It is based on the study, "Life Cycle Assessment of Silica/Silane and S-SBR Used in Treads of Green Tires, Including Potential Differences to Carbon Black and E-SBR Used in Treads of Black Tires." This study was conducted in accordance with ISO standards 14040 and 14044 (ISO 2006) and reviewed by a panel of external experts.
Shastri, who is currently the coach of the national team, has dispelled any talks about potential differences between the two.
However, it would be naive to expect the tactical cooperation among these countries to turn into a strategic partnership or an alliance when considering the potential differences among them, which could resurface as a result of unpredictable developments on the ground.
There are, however, four important potential differences between PPIs and MPIs that data users should consider before comparing the two series.
The potential differences are obtained on a previously defined measuring grid.

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