VIDEOS 1 TO 50

Physics - what is a coulomb, ampere, volt

Published: 2015/02/09

Channel: Skill up

What is a Coulomb? An Explanation

Published: 2016/01/30

Channel: Step-by-Step Science

Coulomb's Law | Electrostatics | Electrical engineering | Khan Academy

Published: 2014/12/11

Channel: Khan Academy

La force électrique : loi de Coulomb

Published: 2014/10/08

Channel: clipedia

8.02x - Lect 1 - Electric Charges and Forces - Coulomb's Law - Polarization

Published: 2015/02/13

Channel: Lectures by Walter Lewin. They will make you ♥ Physics.

Electric Charges: "Coulomb's Law" 1959 PSSC; Eric Rogers; Princeton University

Published: 2017/05/18

Channel: Jeff Quitney

Coulomb's law

Published: 2011/12/29

Channel: Zach Wissner-Gross

COULOMBSCHES GESETZ: Coulombkraft einfach erklärt!

Published: 2014/02/23

Channel: Universaldenker

Physik: Coulomb

Published: 2016/03/08

Channel: Julia Goebel

Charles Augustin Coulomb

Published: 2015/03/19

Channel: Radiologia Cursos

Me Salva! ELT10 - Eletrostática - Lei de Coulomb (Parte 1)

Published: 2014/02/21

Channel: Me Salva!

La Ley de Coulomb | MasterD

Published: 2012/12/20

Channel: MasterD

Coulomb's Law

Published: 2010/10/01

Channel: uclaphysicsvideo

What`s a Coulomb?

Published: 2014/11/03

Channel: apprenticemath

Elektriksel Kuvvet [Coulomb Yasası]

Published: 2015/12/24

Channel: Umut Öncül

Ley de fuerzas de Coulomb (I).mov

Published: 2012/09/11

Channel: profesorparticular09

Electric Force, Coulomb's Law, 3 Point Charges, Physics Problems & Examples Explained

Published: 2016/09/20

Channel: The Organic Chemistry Tutor

FORÇA ELÉTRICA (LEI DE COULOMB) - EXERCÍCIOS RESOLVIDOS - AULA 4 - Prof. Marcelo Boaro

Published: 2016/04/19

Channel: Canal Física

clase 5: La ley de Coulomb mas problema.

Published: 2013/05/10

Channel: Cesar Antonio Izquierdo Merlo

Coulomb's Law (with example)

Published: 2016/07/29

Channel: Up and Atom

coulomb law

Published: 2013/07/18

Channel: S Ghosh

Carica elettrica e forza di Coulomb (Davide Contini)

Published: 2015/01/21

Channel: Polimi OpenKnowledge

Ley de Coulomb

Published: 2011/03/18

Channel: Pedro José Castela

Lecture 11.4 - Mohr-Coulomb criterion I

Published: 2016/02/04

Channel: Helsinki University Geodynamics Group (HUGG)

3. Coulomb's Law (Hindi) |

Published: 2016/12/07

Channel: Ignited Minds

Notação Científica e a Lei de Coulomb

Published: 2016/04/03

Channel: Prof. Fabiano Meira

Força Elétrica - Lei de Coulomb

Published: 2009/02/11

Channel: Flávio Cunha

CE 540 Mod 2.3 Coulomb Earth Pressure

Published: 2015/01/14

Channel: Geotechnical Engineering: Graduate Classes Prof. Kitch

Physics - Coulomb's Law (3 of 8)

Published: 2013/02/17

Channel: Michel van Biezen

Coulomb's Torsion Balance

Published: 2010/04/27

Channel: TutorVista

Carica elettrica e legge di Coulomb

Published: 2015/01/05

Channel: QuelloDiFisica

Coulomb Kanunu (Elektriksel Kuvvet) Soru Çözümleri ile Birlikte

Published: 2017/12/09

Channel: Engin GÖKŞİN

Electricité - Forces électriques, loi de Coulomb

Published: 2012/10/22

Channel: swisslearn

COULOMB'S LAW

Published: 2015/02/14

Channel: 7activestudio

Ley de Coulomb. Fuerzas Eléctricas.

Published: 2016/05/11

Channel: Gerardo Alberto Leal

Coulomb's theory of earth pressure | Soil Mechanics

Published: 2017/05/28

Channel: APSED

Fuerza eléctrica: Ley de Coulomb - Física - Educatina

Published: 2013/08/29

Channel: Educatina

Lei de Coulomb-Exercicio resolvido passo a passo

Published: 2013/03/21

Channel: Seu saber

Força Elétrica: Lei de Coulomb - Extensivo Física | Descomplica

Published: 2012/05/16

Channel: Descomplica

Coulomb's law in electrostatics | video in HINDI | EduPoint

Published: 2016/02/10

Channel: EduPoint

Fuerza eléctrica. Ley de Coulomb. Curso de Electricidad - Clase 2

Published: 2015/01/27

Channel: Profesor Sergio Llanos

Me Salva! ELT12 - Eletrostática - Lei de Coulomb - Exemplo 1

Published: 2014/02/21

Channel: Me Salva!

Física - Lei de Coulomb

Published: 2014/01/13

Channel: Hexag Mackenzie

LA BALANZA DE TORSIÓN DE COULOMB

Published: 2014/12/01

Channel: ISAAC PEREZ

Physics Pradeep Kshetrapal.XII.1.04 Electrostatics Coulomb's Law part-1(2014)

Published: 2014/04/14

Channel: Pradeep Kshetrapal

XII-1-6 Vector form of Coulombs Law (2017), Pradeep Kshetrapal Physics channel

Published: 2017/04/21

Channel: Pradeep Kshetrapal

Ley de Fuerzas de Coulomb | Física prepa

Published: 2016/06/13

Channel: Profesor Particular Puebla

Ejercicios de la Ley de Coulomb

Published: 2016/04/14

Channel: Ingrid Yamileth De Trejo

Coulomb's Law Experiment

Published: 2015/04/23

Channel: pascoscientific

Electrostatique Partie 1 La charge et la loi de Coulomb

Published: 2014/08/19

Channel: KhanAcademyFrancophone

Coulomb | |
---|---|

Unit system | SI derived unit |

Unit of | Electric charge |

Symbol | C |

Named after | Charles-Augustin de Coulomb |

Unit conversions | |

1 C in ... |
... is equal to ... |

SI base units | A⋅s |

CGS units | 2997924580 statC |

Atomic units | 6.24150934(14)e×10^{18}^{[1]} |

The **coulomb** (symbol: C) is the International System of Units (SI) unit of electric charge. It is the charge (symbol: *Q* or *q*) transported by a constant current of one ampere in one second:

Thus, it is also the amount of excess charge on a capacitor of one farad charged to a potential difference of one volt:

It is equivalent to the charge of approximately ×10^{18} ( 6.242×10^{−5} 1.036mol) protons, and −1 C is equivalent to the charge of approximately ×10^{18} 6.242electrons.

This SI unit is named after Charles-Augustin de Coulomb. As with every International System of Units (SI) unit named for a person, the first letter of its symbol is upper case (C). However, when an SI unit is spelled out in English, it should always begin with a lower case letter (*coulomb*)—except in a situation where *any* word in that position would be capitalized, such as at the beginning of a sentence or in material using title case. Note that "degree Celsius" conforms to this rule because the "d" is lowercase.— Based on *The International System of Units*, section 5.2.^{[2]}

The SI system defines the coulomb in terms of the ampere and second: 1 C = 1 A × 1 s.^{[3]} The second is defined in terms of a frequency naturally emitted by caesium atoms.^{[4]} The ampere is defined using Ampère's force law;^{[5]} the definition relies in part on the mass of the international prototype kilogram, a metal cylinder housed in France.^{[6]} In practice, the watt balance is used to measure amperes with the highest possible accuracy.^{[6]}

Since the charge of one electron is known to be about 1766208(98)×10^{−19} C, 1.602^{[7]} 1 C can also be considered the charge of roughly 6.241509×10^{18} electrons or +1 C the charge of that many positrons or protons, where the number is the reciprocal of 1.602177×10^{−19}.

The proposed redefinition of the ampere and other SI base units would have the effect of fixing the numerical value of the elementary charge to an explicit constant expressed in coulombs, and therefore it would implicitly fix the value of the coulomb when expressed as a multiple of the fundamental charge (the numerical values of those quantities are the multiplicative inverses of each other).

Submultiples | Multiples | |||||
---|---|---|---|---|---|---|

Value | SI symbol | Name | Value | SI symbol | Name | |

10^{−1} C |
dC | decicoulomb | 10^{1} C |
daC | decacoulomb | |

10^{−2} C |
cC | centicoulomb | 10^{2} C |
hC | hectocoulomb | |

10^{−3} C |
mC |
millicoulomb |
10^{3} C |
kC | kilocoulomb | |

10^{−6} C |
µC |
microcoulomb |
10^{6} C |
MC | megacoulomb | |

10^{−9} C |
nC |
nanocoulomb |
10^{9} C |
GC | gigacoulomb | |

10^{−12} C |
pC |
picocoulomb |
10^{12} C |
TC | teracoulomb | |

10^{−15} C |
fC | femtocoulomb | 10^{15} C |
PC | petacoulomb | |

10^{−18} C |
aC | attocoulomb | 10^{18} C |
EC | exacoulomb | |

10^{−21} C |
zC | zeptocoulomb | 10^{21} C |
ZC | zettacoulomb | |

10^{−24} C |
yC | yoctocoulomb | 10^{24} C |
YC | yottacoulomb | |

Common multiples are in bold face. |

See also SI prefix.

- One coulomb is the magnitude (absolute value) of electrical charge in 6.24150934(14)×10
^{18}protons or electrons.^{[1]} - The inverse of this number gives the elementary charge of 1766208(98)×10
^{−19}C. 1.602^{[7]} - The magnitude of the electrical charge of one mole of elementary charges (approximately 6.022×10
^{23}, or Avogadro's number) is known as a faraday unit of charge (closely related to the Faraday constant). One faraday equals 96485.3399 coulombs. In terms of Avogadro's number (*N*_{A}), one coulomb is equal to approximately 1.036 ×*N*_{A}×10^{−5}elementary charges. - One ampere-hour = 3600 C ∴ 1 mA⋅h = 3.6 C.
- One statcoulomb (statC), the obsolete CGS electrostatic unit of charge (esu), is approximately 3.3356×10
^{−10}C or about one-third of a nanocoulomb.

The elementary charge, the charge of a proton (equivalently, the negative of the charge of an electron), is approximately 1766208(98)×10^{−19} C 1.602^{[7]}. In SI, the elementary charge in coulombs is an approximate value: no experiment can be infinitely accurate. However, in other unit systems, the elementary charge has an *exact* value by definition, and other charges are ultimately measured relative to the elementary charge.^{[8]} For example, in conventional electrical units, the values of the Josephson constant *K*_{J} and von Klitzing constant *R*_{K} are exact defined values (written *K*_{J-90} and *R*_{K-90}), and it follows that the elementary charge *e* = 2/(*K*_{J}*R*_{K}) is also an exact defined value in this unit system.^{[8]} Specifically, *e*_{90} = (×10^{−9})/( 2812.807 × 25597.9) C 483 exactly.^{[8]} SI itself may someday change its definitions in a similar way.^{[8]} For example, one possible proposed redefinition is "the ampere...is [defined] such that the value of the elementary charge *e* (charge on a proton) is exactly 176487×10^{−19} coulombs", 1.602^{[9]} (in which the numeric value is the 2006 CODATA recommended value, since superseded). This proposal is not yet accepted as part of the SI.

- The charges in static electricity from rubbing materials together are typically a few microcoulombs.
^{[10]} - The amount of charge that travels through a lightning bolt is typically around 15 C, although large bolts can be up to 350 C.
^{[11]} - The amount of charge that travels through a typical alkaline AA battery from being fully charged to discharged is about 5 kC = 5000 C ≈ 1400 mA⋅h.
^{[12]} - The hydraulic analogy uses everyday terms to illustrate movement of charge and the transfer of energy. The analogy equates charge to a volume of water, and voltage to pressure. One coulomb equals (the negative of) the charge of ×10
^{18}electrons. The amount of energy transferred by the flow of 1 coulomb can vary; for example, 300 times fewer electrons flow through a lightning bolt than in the discharge of an AA battery, but the total energy transferred by the flow of the lightning's electrons is 300 million times greater. 6.24

- Abcoulomb, a cgs unit of charge
- Ampère's circuital law
- Coulomb's law
- Electrostatics
- Elementary charge
- Faraday (unit), an obsolete unit
- Quantity of electricity

- ^
^{a}^{b}6.24150934(14)×10^{18}is the reciprocal of the 2010 CODATA recommended value 1.602176565(35)×10^{−19}for the elementary charge in coulomb. **^**"SI Brochure, Appendix 1," (PDF). BIPM. p. 144.**^**"SI brochure, section 2.2.2". BIPM.**^**"SI brochure, section 2.2.1.3". BIPM.**^**"SI brochure, section 2.2.1.4". BIPM.- ^
^{a}^{b}"Watt Balance". BIPM. - ^
^{a}^{b}^{c}"CODATA Value: elementary charge".*The NIST Reference on Constants, Units, and Uncertainty*. US National Institute of Standards and Technology. June 2015. Retrieved 2015-09-22.2014 CODATA recommended values

- ^
^{a}^{b}^{c}^{d}Mills, I. M.; Mohr, P. J.; Quinn, T. J.; Taylor, B. N.; Williams, E. R. (2005). "Redefinition of the kilogram: a decision whose time has come".*Metrologia*.**42**(2): 71. Bibcode:2005Metro..42...71M. doi:10.1088/0026-1394/42/2/001. **^**Report of the CCU to the 23rd CGPM**^**Martin Karl W. Pohl. "Physics: Principles with Applications" (PDF). DESY.**^**Hasbrouck, Richard. Mitigating Lightning Hazards, Science & Technology Review May 1996. Retrieved on 2009-04-26.**^***How to do everything with digital photography – David Huss*, p. 23, at Google Books, "The capacity range of an AA battery is typically from 1100–2200 mAh."

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Wikipedia content is licensed under the GFDL and (CC) license