Package org.djunits.quantity

Class ElectricCharge.Unit

java.lang.Object

org.djunits.unit.AbstractUnit<ElectricCharge.Unit,ElectricCharge>

org.djunits.quantity.ElectricCharge.Unit

All Implemented Interfaces:

UnitInterface<ElectricCharge.Unit,ElectricCharge>

Enclosing class:

ElectricCharge

public static class ElectricCharge.Unit
extends AbstractUnit<ElectricCharge.Unit,ElectricCharge>

ElectricCharge.Unit is a unit of electric charge and is expressed in Coulomb.

Copyright (c) 2025-2026 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djunits.org. The DJUNITS project is distributed under a three-clause BSD-style license.

Author:

Alexander Verbraeck

Field Summary

Fields

Modifier and Type	Field	Description
static final ElectricCharge.Unit	abC	abcoulomb (CGS EMU).
static final ElectricCharge.Unit	Ah	ampere hour.
static final ElectricCharge.Unit	C	Gray.
static final ElectricCharge.Unit	e	atomic unit of charge.
static final ElectricCharge.Unit	emu	emu (CGS EMU).
static final ElectricCharge.Unit	esu	esu (CGS ESU).
static final ElectricCharge.Unit	F	Faraday.
static final ElectricCharge.Unit	Fr	franklin (CGS ESU).
static final ElectricCharge.Unit	kAh	kiloampere hour.
static final ElectricCharge.Unit	mAh	milliampere hour.
static final ElectricCharge.Unit	MAh	megaampere hour.
static final ElectricCharge.Unit	mAs	milliampere second.
static final ElectricCharge.Unit	mC	milliCoulomb = mA.s.
static final ElectricCharge.Unit	muC	microCoulomb = muA.s.
static final ElectricCharge.Unit	SI	The SI or BASE unit.
static final SIUnit	SI_UNIT	The dimensions of electric charge, the Coulumb, is A.s.
static final ElectricCharge.Unit	statC	statcoulomb (CGS ESU).

Constructor Summary

Constructors

Constructor	Description
Unit(String id, String name, double scaleFactorToBaseUnit, UnitSystem unitSystem)	Create a new ElectricCharge unit.
Unit(String textualAbbreviation, String displayAbbreviation, String name, Scale scale, UnitSystem unitSystem)	Return a derived unit for this unit, with textual abbreviation(s) and a display abbreviation.

Method Summary

Modifier and Type	Method	Description
ElectricCharge.Unit	deriveUnit(String textualAbbreviation, String displayAbbreviation, String name, double scaleFactor, UnitSystem unitSystem)	Return a linearly scaled derived unit for this unit, with textual abbreviation(s) and a display abbreviation.
ElectricCharge.Unit	getBaseUnit()	Return the base unit for this unit.
ElectricCharge	ofSi(double si)	Return an SI-quantity for this unit with a value.
SIUnit	siUnit()	Return the SI unit for this unit.

Methods inherited from class org.djunits.unit.AbstractUnit

deriveUnit, equals, generateSiPrefixes, getDisplayAbbreviation, getId, getName, getScale, getSiPrefix, getStoredDisplayAbbreviation, getStoredName, getStoredTextualAbbreviation, getTextualAbbreviation, getUnitSystem, hashCode, setSiPrefix, setSiPrefix, setSiPrefixKilo, setSiPrefixPer, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.djunits.unit.UnitInterface

fromBaseValue, quantityInUnit, toBaseValue

Field Details

SI_UNIT

public static final SIUnit SI_UNIT

The dimensions of electric charge, the Coulumb, is A.s.

C

public static final ElectricCharge.Unit C

Gray.

SI

public static final ElectricCharge.Unit SI

The SI or BASE unit.

mC

public static final ElectricCharge.Unit mC

milliCoulomb = mA.s.

muC

public static final ElectricCharge.Unit muC

microCoulomb = muA.s.

Ah

public static final ElectricCharge.Unit Ah

ampere hour.

mAh

public static final ElectricCharge.Unit mAh

milliampere hour.

mAs

public static final ElectricCharge.Unit mAs

milliampere second.

kAh

public static final ElectricCharge.Unit kAh

kiloampere hour.

MAh

public static final ElectricCharge.Unit MAh

megaampere hour.

F

public static final ElectricCharge.Unit F

Faraday.

e

public static final ElectricCharge.Unit e

atomic unit of charge. This value is exact since the 2019 redefinition of the SI base units.

statC

public static final ElectricCharge.Unit statC

statcoulomb (CGS ESU).

Fr

public static final ElectricCharge.Unit Fr

franklin (CGS ESU).

esu

public static final ElectricCharge.Unit esu

esu (CGS ESU).

abC

public static final ElectricCharge.Unit abC

abcoulomb (CGS EMU).

emu

public static final ElectricCharge.Unit emu

emu (CGS EMU).

Constructor Details

Unit

public Unit(String id,
 String name,
 double scaleFactorToBaseUnit,
 UnitSystem unitSystem)

Create a new ElectricCharge unit.

Parameters:

id - the id or main abbreviation of the unit

name - the full name of the unit

scaleFactorToBaseUnit - the scale factor of the unit to convert it TO the base (SI) unit

unitSystem - the unit system such as SI or IMPERIAL

Unit

public Unit(String textualAbbreviation,
 String displayAbbreviation,
 String name,
 Scale scale,
 UnitSystem unitSystem)

Return a derived unit for this unit, with textual abbreviation(s) and a display abbreviation.

Parameters:

textualAbbreviation - the textual abbreviation of the unit, which doubles as the id

displayAbbreviation - the display abbreviation of the unit

name - the full name of the unit

scale - the scale to use to convert between this unit and the standard (e.g., SI, BASE) unit

unitSystem - unit system, e.g. SI or Imperial

Method Details

siUnit

public SIUnit siUnit()

Description copied from interface: UnitInterface

Return the SI unit for this unit.

Returns:

the SI unit for this unit

getBaseUnit

public ElectricCharge.Unit getBaseUnit()

Description copied from interface: UnitInterface

Return the base unit for this unit.

Returns:

the base unit for this unit

ofSi

public ElectricCharge ofSi(double si)

Description copied from interface: UnitInterface

Return an SI-quantity for this unit with a value.

Parameters:

si - the value in SI or BASE units

Returns:

an SI-quantity for this unit with the given si-value

deriveUnit

public ElectricCharge.Unit deriveUnit(String textualAbbreviation,
 String displayAbbreviation,
 String name,
 double scaleFactor,
 UnitSystem unitSystem)

Description copied from class: AbstractUnit

Return a linearly scaled derived unit for this unit, with textual abbreviation(s) and a display abbreviation.

Specified by:

deriveUnit in class AbstractUnit<ElectricCharge.Unit,ElectricCharge>

Parameters:

textualAbbreviation - the textual abbreviation of the unit, which doubles as the id

displayAbbreviation - the display abbreviation of the unit

name - the full name of the unit

scaleFactor - the (linear) scale factor to multiply with the current (linear) scale factor

unitSystem - unit system, e.g. SI or Imperial

Returns:

a derived unit for this unit