What is the Meaning & Definition of voltage

Voltage is the physical magnitude that, in an electrical circuit, pushes electrons through a conductor. I.e., driving electric power with more or less power.
Voltage and Volt are terms in honor of Alessandro Volta, who invented the photovoltaic cell and the first chemical battery in 1800.
The voltage is a synonym of tension and potential difference. In other words, the voltage is work per unit charge exerted by the electric on a particle field so this move from one place to another. In the international system of units, this potential difference is measured in volts (V), and this determines the categorization in "low" or "high voltage".
A volt is the unit of electrical potential, electromotive force and voltage. Some common voltages are that of a neuron (75 mV), a battery or non-rechargeable alkaline battery (1.5 V), a rechargeable lithium (3.75 V), auto electrical system (12 V), the electricity in a House (230 in Europe, Asia and Africa), 220 and 120 in North America some South American countries, the rail of a train (600 to 700 V) , a transport network of electricity of high voltage (110 kV) and lightning (100 MV).
The term "high voltage" characterizes electrical circuits in which the level of voltage used required privacy and security measures. This occurs, for example, in electrical systems of high level, in x-ray rooms, and other areas of science and physical research. The definition of "high voltage" depends on the circumstances, but they are considered to determine it the possibility of the circuit to produce a "spark" electric in the air or by contact or proximity to the circuit causing electric shock. A shock of magnitude applied to a human or other living beings can produce a lethal cardiac fibrillation. For example, the hit of lightning in a storm on a person is often cause of death.
Article contributed by the team of collaborators.