## Volts.

Volt – unit of electrical potential, potential difference, voltage and electromotive force in the International system of units (SI). Volt as a unit of measurement is the Russian designation In the international designation – V.

Representation of the volt to other units – formula

Multiples and sub-multiples of a unit volt

__Other units of measurement__

## Volt is unit of measure:

**Volt **– unit of electrical potential, potential difference, voltage and electromotive force in the International system of units (SI), named after the Italian physicist and physiologist Alessandro Volta.

**Volt** as a unit of measurement is the Russian designation In the international designation – V.

There are several definitions of a volt.

The potential difference between two points is 1 volt (C) if the moving charge magnitude of 1 Coulomb (C) from one point to another above it is necessary to perform work quantity 1 Joule (j).

**1 volt** (V) an electrical tension that caused in the electric circuit a constant current of 1 ampere (A) at a power of 1 watt (W). Or 1 volt is equal to the electric voltage at the ends of the conductor necessary for the allocation in this heat with a power of one watt (W) when power flows through the conductor DC at one ampere (A).

**1 volt** (V) is equal to the potential difference across the resistor in 1 Ohm (Ω) when the flow through it of current in 1 ampere (A).

A = (m2 · kg) / (S3 · A) = j / KL = A / Ω = W / a = A · Ohms.

1 = (1-m2 · 1 kg) / (C3 1 · 1 A) = 1 j / 1 C = 1 A / 1 Ohm = 1 watt / 1 A = 1 A · 1 Ohm.

In the International system of units volts, put the decision of the XI General conference on weights and measures in 1960, simultaneously with the adoption of the SI as a whole. In accordance with the rules SI, and relating the derived units are named for scientists, the name of the unit “volt” is spelled with a lowercase letter and its name — with a capital (In). Such writing of the designation is stored in the symbols for derived units formed by using the volt.

## The application volt:

Volts measure electric potential, potential difference, voltage and electromotive force.

## Representation of the volt to other units – of the formula:

Through the basic and derived SI units volts is expressed as follows:

A = (m2 · kg) / (S3 · A)

In = J / KL

In = A / Ω

V = W / A

V = A · Ohms

where A is amperes, In volts, KL – pendant, j – Joule, m = meter, s – second W – watt, kg – kilo, of om – Om.

## Multiple and fractional units of volts:

Multiple and sub-multiple units are formed using standard prefixes of the SI.

Multiple |
Dolny |
||||||

value |
name |
marking |
value |
name |
marking |
||

101 | decapolit |
giving | daV | 10-1 In | dezvolt |
DV | dV |

102 In | echovolt |
GW | hV | 10-2 In | santigold |
SV | cV |

103 In | kV |
kV | kV | 10-3 In | millivolts |
mV | mV |

106 | megavolt |
MV | MV | 10-6 | microvolts |
MKV | µV |

109 | gigavolt |
GW | GV | 10-9 In | NV |
NV | nV |

1012 To | terravolt |
TV | TV | 10-12 In | PV |
PV | pV |

1015 To | metabolic |
PV | PV | 10-15 In | femtovolt |
fV | fV |

1018 To | exavault |
EV | EV | 10-18 In | attualit |
AV | aV |

1021 To | sattawat |
THIS | CL | 10-21 In | septodont |
this | CL |

1024 | yottawatt |
YVES | YV | 10-24 In | yoctowatt |
Yves | yV |

## Interesting examples*:

The smallest measurable voltage is about 10 NV.

The potential difference on the membrane of the neuron is 70 mV.

The voltage of conventional AA battery AA 1.5 V (DC).

Power of computer components has a voltage of – 5 V, 12 V (DC).

The voltage of the electrical equipment of automobiles – 12 In, for heavy trucks – 24 V (DC).

The voltage in the batteries of cars, 12/24 V (DC).

The voltage of a laptop power supply and LCD monitors – 19 In (permanent).

“Safe” low voltage in hazardous conditions – 36-42 In (AC).

The voltage in the phone line (at the lowered tube) – In 50 (DC).

Power supply Japan – 100 / 172 In (three-phase).

The home voltage US is 120 / 240V (split-phase) (three phase AC).

The voltage of household electricity Russia is 220 / 380V (three phase AC).

The electrical discharge chute up to 200-250 (permanent).

The discharge of the electric eel – up to 650 V (constant).

The voltage at the spark plug of the car – 10-25 kV (pulsed).

The voltage in the contact network of tram, trolley – 600 V (660 V) (permanent).

The voltage on the third rail in the subway – 825 In (permanent).

The voltage in the contact network of Railways – 3 kV (DC), 25 kV (AC).

Voltage trunk lines– 110, 220, 330, 500, 750 and 1150 kV (three-phase).

The high DC voltage obtained in the laboratory is 25 MV.

Lightning has a voltage of 100 MV and above (permanent).

* in brackets the type strain.

Source: https://ru.wikipedia.org/wiki/Вольт

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