# potential difference

(redirected from potential differences)
Also found in: Dictionary, Thesaurus, Medical.
Related to potential differences: Electrical potential difference

## 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 ?
The maximum relative error caused by the potential difference between the nonpolarizable electrodes within 30 min did not exceed 1%.
Skin potential has typically been studied through transcutaneous potential measurement (the potential difference between the outer skin surface and the inner skin layers), which is an invasive method [14-15,21-22].
Potential differences in high school grade point average, current semester and overall college grade point averages, number of advanced placement credits awarded, Scholastic Aptitude Test percentile, credit hours completed, and all other dependent measures described below were examined using a multivariate analysis of variance (MANOVA) with response format (feedback: immediate, 24-hour, end-of-test, control, and sex of participant) as between-subject factors; Bonferroni adjustments were used for post hoc comparisons.
Mintel's report notes other potential differences between recent immigrants and second-generation Hispanics that can effect personal care spending.
Constant potential differences of 5-17 kV were applied with an increment of 1 kV for each run by using the same flow rate program.
However, they certainly would not have been so willing to face the wrath of some of their more 'unreconstructed' colleagues had they known the West Midlands "pilot" might actually transform into regional policy alone, with no national system to remove the potential differences in competitiveness between regions.
These effects include the diamagnetic and optical potential differences between full and empty targets, as well as path length differences due to small-angle neutron scattering in liquid helium.
The body has weak electrical potential differences and is sensitive to weak electric fields around pipes, wiring, and even wooden studs.
Sarbanes-Oxley provisions create a number of potential differences between public and private companies, ranging from the composition of audit committees to the extent of internal controls and even whether a company can make loans to its officers.
Delvoscan[R] provides an easy to read numerical print out of test results, yielding unbiased results and eliminating potential differences in data interpretation from operator to operator.
Further investigations of these potential differences may provide valuable clues on how to reduce women's fear in this country.

Site: Follow: Share:
Open / Close