Glossary

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There are 9 names in this directory beginning with the letter V.
Velocity of Propagation
The speed of an electrical signal down a length of cable compared to speed in free space expressed as a percent. It is the reciprocal of the square root of the dielectric constant of the cable insulation.

VHF
Very High Frequency, 30 to 300 MHz.

Volt (V)
A unit of electrical pressure. One volt is the amount of pressure that will cause one ampere of current in one ohm of resistance.

Voltage
Electrical potential or electromotive force expressed in volts.

Voltage Drop
A term used to express the amount of voltage loss in a conductor of given size and length drawing a given current.

Voltage Rating
The highest voltage that may be continuously applied to a wire or cord in conformance with standards or specifications.

Voltage Withstand Test
A field or factory test in which a conductor is subjected to a higher than normal AC or DC voltage.

Volume Resistivity
(Specific Insulation Resistance) The electrical resistance between opposite faces of a 1-cm cube of insulating material, commonly expressed in ohm-centimeters.

Vulcanization
A chemical reaction in which the physical properties of an elastomer are changed by reacting it with sulfur or other cross-linking agents.