# Electric charge

chargechargedelectrical chargeelectrically chargedchargeselectrostatic chargepositive chargenegatively chargedelectrically neutralnegative charge
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.wikipedia
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### Electromagnetic field

electromagnetic fieldselectromagneticEMF
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
An electromagnetic field (also EMF or EM field) is a physical field produced by electrically charged objects.

### Proton

protonspH +
There are two types of electric charges; positive and negative (commonly carried by protons and electrons respectively). In ordinary matter, negative charge is carried by electrons, and positive charge is carried by the protons in the nuclei of atoms.
A proton is a subatomic particle, symbol or, with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron.

### Electron

electronse − electron mass
There are two types of electric charges; positive and negative (commonly carried by protons and electrons respectively). In ordinary matter, negative charge is carried by electrons, and positive charge is carried by the protons in the nuclei of atoms.
The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

### Classical electromagnetism

electrodynamicsclassical electrodynamicselectrodynamic
An object with an absence of net charge is referred to as . Early knowledge of how charged substances interact is now called classical electrodynamics, and is still accurate for problems that do not require consideration of quantum effects.
Classical electromagnetism or classical electrodynamics is a branch of theoretical physics that studies the interactions between electric charges and currents using an extension of the classical Newtonian model.

### Atom

atomsatomic structureatomic
In ordinary matter, negative charge is carried by electrons, and positive charge is carried by the protons in the nuclei of atoms.
The protons have a positive electric charge, the electrons have a negative electric charge, and the neutrons have no electric charge.

### Magnetic field

magnetic fieldsmagneticmagnetic flux density
Electric charges create an electric field, if they are moving they also generate a magnetic field.
Magnetic fields surround and are created by magnetized material and by moving electric charges (electric currents) such as those used in electromagnets.

### Electric field

electricelectrostatic fieldelectrical field
Electric charges create an electric field, if they are moving they also generate a magnetic field.
An electric field (sometimes abbreviated as E-field) is a vector field surrounding an electric charge that exerts force on other charges, attracting or repelling them.

### Quark

quarksantiquarkantiquarks
Charge is quantized; it comes in integer multiples of individual small units called the elementary charge, e, about 1.602 coulombs, which is the smallest charge which can exist free (particles called quarks have smaller charges, multiples of 1⁄3e, but they are only found in combination, and always combine to form particles with integer charge).
Quarks have various intrinsic properties, including electric charge, mass, color charge, and spin.

### Elementary charge

eelectron chargecharge
Charge is quantized; it comes in integer multiples of individual small units called the elementary charge, e, about 1.602 coulombs, which is the smallest charge which can exist free (particles called quarks have smaller charges, multiples of 1⁄3e, but they are only found in combination, and always combine to form particles with integer charge).
, is the electric charge carried by a single proton, or equivalently, the magnitude of the electric charge carried by a single electron, which has charge

### Quantum electrodynamics

QEDquantum electrodynamicelectromagnetic
The study of charged particles, and how their interactions are mediated by photons, is called quantum electrodynamics.
QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.

### Ampere hour

mAhAhmA·h
In electrical engineering, it is also common to use the ampere-hour (Ah); in physics and chemistry, it is common to use the elementary charge (e as a unit).
An ampere hour or amp hour (symbol Ah; also denoted A⋅h or A h) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3600 coulombs.

### Photon

photonslight quantalight
The study of charged particles, and how their interactions are mediated by photons, is called quantum electrodynamics.
The intrinsic properties of particles, such as charge, mass, and spin, are determined by this gauge symmetry.

### Electrostatics

electrostaticelectrostatic repulsionelectrostatic interactions
Charge is the fundamental property of forms of matter that exhibit electrostatic attraction or repulsion in the presence of other matter.
Electrostatics is a branch of physics that studies electric charges at rest.

### Physical property

physical propertiesphysicalproperties
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
electric charge

### Matter

corporealsubstancematerial
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
They carry an electric charge of −1⁄3 e (down-type quarks) or +2⁄3 e (up-type quarks).

### Coulomb's law

coulombelectrostatic forceCoulomb force
The SI derived unit of electric charge is the coulomb (C) named after French physicist Charles-Augustin de Coulomb.
Electrostatic force is the amount of force with which stationary, electrically charged particles either repel, or attract each other.

### Robert Andrews Millikan

Robert MillikanRobert A. MillikanMillikan
Robert Millikan's oil drop experiment demonstrated this fact directly, and measured the elementary charge.
In 1909 Millikan began a series of experiments to determine the electric charge carried by a single electron.

Chemistry also uses the Faraday constant as the charge on a mole of electrons.
In physics and chemistry, this constant represents the magnitude of electric charge per mole of electrons.

### Charles-Augustin de Coulomb

CoulombCharles CoulombCharles A. Coulomb
The SI derived unit of electric charge is the coulomb (C) named after French physicist Charles-Augustin de Coulomb.
The SI unit of electric charge, the coulomb, was named in his honour in 1908.

### Force

forcesattractiveforce vector
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
The electromagnetic force acts between electric charges, and the gravitational force acts between masses.

### Ion

cationanionions
An ion is an atom (or group of atoms) that has lost one or more electrons, giving it a net positive charge (cation), or that has gained one or more electrons, giving it a net negative charge (anion).
An ion is an atom or molecule that has a non-zero net electrical charge.

### Static electricity

staticstatic chargestatic electric
When the net electric charge of an object is non-zero and motionless, the phenomenon is known as static electricity.
Static electricity is an imbalance of electric charges within or on the surface of a material.

### Charged particle

charged particleschargedparticle
Electric charge is a characteristic property of many subatomic particles.
In physics, a charged particle is a particle with an electric charge.

### Conservation law

conservation lawsconservedconservative
Electric charge is a conserved property; the net charge of an isolated system, the amount of positive charge minus the amount of negative charge, cannot change.
For example, the amount of electric charge in a volume is never found to change without an electric current into or out of the volume that carries the difference in charge.

### Antiparticle

antiparticlesanti-particleantiquark
The charge of an antiparticle equals that of the corresponding particle, but with opposite sign.
In particle physics, every type of particle has an associated antiparticle with the same mass but with opposite physical charges (such as electric charge).