## Joule |

joule unit system si derived unit unit of energy symbol j named after james prescott joule conversions 1 j *in ...**... is equal to ...*si base units ⋅kg m ^{2}⋅s ^{−2}cgs units 1×10 ^{7}erg kilowatt hours 2.78×10 ^{−7}kw⋅h (kilocalories )thermochemical 2.390×10 ^{−4}kcal_{th}btus 9.48×10 ^{−4}btuelectronvolts 6.24×10 ^{18}evthe

**joule**( /l ;jawl, jool ^{[1]}^{[2]}^{[3]}symbol:**j**) is a ofderived unit in theenergy .international system of units ^{[4]}it is equal to the energy transferred to (or done on) an object when awork of oneforce acts on that object in the direction of the force's motion through a distance of onenewton (1 newton metre or n⋅m). it is also the energy dissipated as heat when an electricmetre of onecurrent passes through aampere of oneresistance for one second. it is named after the english physicistohm (1818–1889).james prescott joule ^{[5]}^{[6]}^{[7]}in terms firstly of base

and then in terms of other si units, a joule is defined below (please consider this table for the meaning of symbols):si units symbol meaning kg kilogram m metre s second n newton pa pascal w watt c coulomb v volt one joule can also be defined as the following:

- the work required to move an
of oneelectric charge through ancoulomb of one volt, or oneelectrical potential difference *coulomb-volt*(c⋅v). this relationship can be used to define the volt. - the work required to produce one watt of
for one second, or onepower *watt-second*(w⋅s) (compare – 3.6 megajoules). this relationship can be used to define the watt.kilowatt-hour

the joule is named after

. as with everyjames prescott joule unit named for a person, its symbol starts with ansi letter (j), but when written in full it follows the rules for capitalisation of aupper case ; i.e., "common noun *joule*" becomes capitalised at the beginning of a sentence and in titles, but is otherwise in lower case.- history
- practical examples
- multiples
- conversions
- newton metre and torque
- watt-second
- see also
- notes
- references

Joule | |
---|---|

Unit of | |

Symbol | J |

Named after | |

Conversions | |

1 J in ... | ... is equal to ... |

| ^{2}⋅^{−2} |

| 1×10^{7} |

| 2.78×10^{−7} kW⋅h |

| 2.390×10^{−4} kcal_{th} |

| 9.48×10^{−4} BTU |

| 6.24×10^{18} eV |

The **joule** (^{[1]}^{[2]}^{[3]} symbol: **J**) is a ^{[4]} It is equal to the energy transferred to (or ^{[5]}^{[6]}^{[7]}

In terms firstly of base

Symbol | Meaning |
---|---|

kg | |

m | |

s | |

N | |

Pa | |

W | |

C | |

V |

One joule can also be defined as the following:

- The work required to move an
electric charge of onecoulomb through anelectrical potential difference of one volt, or one*coulomb-volt*(C⋅V). This relationship can be used to define the volt. - The work required to produce one watt of
power for one second, or one*watt-second*(W⋅s) (comparekilowatt-hour – 3.6 megajoules). This relationship can be used to define the watt.

The joule is named after *joule*" becomes capitalised at the beginning of a sentence and in titles, but is otherwise in lower case.