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V - Symbol for Volt.
VA - Volt-ampere. A designation of power in terms of
voltage and current.
Vampire Tap - see Tap
Velocity of Propagation - The transmission speed of electrical
energy in a length of cable compared to speed in free space.
Usually expressed as a percentage. Test devices use velocity
of propagation to measure a signal's transit time and thereby
calculate the cable's length.
VGM - Voice Grade Media (see Voice Grade)
VHF - Very high frequency. The portion of the electromagnetic
spectrum extending from 30 to 300 MHz.
Video - A signal which contains visual information, such
as a picture in a television system.
Voice Grade - A term used for twisted-pair cable used
in telephone systems to carry voice signals.
Volt - The unit of electrical potential. One volt is
the electrical potential that will cause one ampere of current
to flow through one ohm of resistance.
Voltage - Electrical potential expressed in Volts.
Voltage Drop - The voltage developed across a component
by the current flow through the resistance of the component. |
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