Communication
Faster access than browser!

# Ampere hour

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. [1]

## Ampere

The ampere (symbol: A), often shortened to "amp",SI supports only the use of symbols and deprecates the use of abbreviations for units.

## Automotive battery

An automotive battery is a rechargeable battery that supplies electrical current to a motor vehicle.

## Centimetre–gram–second system of units

The centimetre–gram–second system of units (abbreviated CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.

## Coulomb

The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge.

## Dimensional analysis

In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms) and tracking these dimensions as calculations or comparisons are performed.

## Dry cell

A dry cell is a type of battery, commonly used for portable electrical devices.

## Electric battery

An electric battery is a device consisting of one or more electrochemical cells with external connections provided to power electrical devices such as flashlights, smartphones, and electric cars.

## Electric charge

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

## Electric current

An electric current is a flow of electric charge.

## Electrochemical equivalent

The electrochemical equivalent, sometimes abbreviated Eq, of a chemical element is the mass of that element (in grams) transported by 1 coulomb of electricity.

## Electrochemistry

Electrochemistry is the branch of physical chemistry that studies the relationship between electricity, as a measurable and quantitative phenomenon, and identifiable chemical change, with either electricity considered an outcome of a particular chemical change or vice versa.

## Electroplating

Electroplating is a process that uses an electric current to reduce dissolved metal cations so that they form a thin coherent metal coating on an electrode.

## Electrostatic units

The electrostatic system of units (ESU) is a system of units used to measure quantities of electric charge, electric current, and voltage within the centimeter-gram-second (or "CGS") system of metric units.

The Faraday constant, denoted by the symbol and sometimes stylized as ℱ, is named after Michael Faraday.

## Gaussian units

Gaussian units constitute a metric system of physical units.

## International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

## List of battery sizes

This article lists the sizes, shapes, and general characteristics of some common primary and secondary battery types in household and light industrial use.

## Mole (unit)

The mole, symbol mol, is the SI unit of amount of substance.

Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is therapy using ionizing radiation, generally as part of cancer treatment to control or kill malignant cells and normally delivered by a linear accelerator.

Radiography is an imaging technique using X-rays to view the internal form of an object.

## Real versus nominal value

The distinction between real value and nominal value occurs in many fields.

## Voltage

Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

## References

Hey! We are on Facebook now! »