Browse Definitions:
Definition

charge quantity

Charge quantity is an expression of the extent to which an object is electrically charged. It is also an expression of the relative number of charge carriers in a given region or volume.

The force with which two electrically charged bodies attract or repel depends on the product of the charge quantities in both objects, and also on the distance between the charge centers of the objects. If the polarities are the same, the force is repulsive; if the polarities are opposite, the force is attractive. For any two charged bodies, the force decreases in proportion to the square of the distance between their charge centers, assuming the charges on the objects do not change.

The most common unit of charge quantity is the coulomb (symbolized C). This is the charge unit in the International System of Units ( SI ) and represents approximately 6.24 x 10 18 unit electric charges. The statcoulomb (statC) is the cgs (centimeter/gram/second) unit of charge quantity, and represents approximately 2.082 x 10 9 unit electric charges. A unit electric charge is the charge quantity contained in a single electron or proton . By convention, electrons are assigned negative charge, and protons are assigned positive charge.

The tables below facilitate conversion among coulombs, statcoulombs, and unit electric charges.

 Unit (and symbol) To convert to coulombs, multiply by: Conversely, multiply by: statcoulomb (statC) 3.3356 x 10 -10 2.9980 x 10 9 unit charge 1.60 x 10 -19 6.24 x 10 18

 Unit (and symbol) To convert to statcoulombs, multiply by: Conversely, multiply by: coulomb (C) 2.9980 x 10 9 3.3356 x 10 -10 unit charge 4.803 x 10 -10 2.082 x 10 9

Also see coulomb , statcoulomb , small-unit metric system , and International System of Units ( SI ).

This was last updated in September 2005

Start the conversation

Send me notifications when other members comment.

SearchCompliance

• risk map (risk heat map)

A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces.

• internal audit (IA)

An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

• pure risk (absolute risk)

Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

SearchSecurity

• FIDO (Fast Identity Online)

FIDO (Fast ID Online) is a set of technology-agnostic security specifications for strong authentication. FIDO is developed by the...

• cryptanalysis

Cryptanalysis is the study of ciphertext, ciphers and cryptosystems with the aim of understanding how they work and finding and ...

• Trojan horse (computing)

In computing, a Trojan horse is a program that appears harmless, but is, in fact, malicious.

SearchHealthIT

• HITECH (Health Information Technology for Economic and Clinical Health) Act of 2009

The HITECH (Health Information Technology for Economic and Clinical Health) Act of 2009 is legislation that was created to ...

• Epic Systems

Epic Systems is one of the largest providers of health information technology, used primarily by large U.S. hospitals and health ...

• accountable care organization (ACO)

An accountable care organization (ACO) is an association of hospitals, healthcare providers and insurers in which all parties ...

SearchDisasterRecovery

• business continuity and disaster recovery (BCDR)

Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

• call tree

A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

• cloud SLA (cloud service-level agreement)

A cloud SLA (cloud service-level agreement) is an agreement between a cloud service provider and a customer that ensures a ...

• wear leveling

Wear leveling is a process that is designed to extend the life of solid-state storage devices.

• storage area network (SAN)

A storage area network (SAN) is a dedicated high-speed network or subnetwork that interconnects and presents shared pools of ...

SearchSolidStateStorage

• hybrid hard disk drive (HDD)

A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close