Class

NSUnitElectricCharge

A unit of measure for electric charge.

Declaration

@interface NSUnitElectricCharge : NSDimension

Overview

You typically use instances of NSUnitElectricCharge to represent specific quantities of electric charge using the NSMeasurement class.

Electric Charge

Electric charge is a fundamental physical property of matter that causes it to experience a force within an electromagnetic field. The SI unit for electric charge is the coulomb (C), which is defined as the amount of charge carried by a current of one ampere in one second (1C = 1A · 1s). Charge is also commonly expressed in terms of ampere hours (Ah).

The NSUnitElectricCharge class defines its base unit as coulombs, and provides the following units, which are initialized using NSUnitConverterLinear converters with the specified coefficients:

Name

Method

Symbol

Coefficient

Coulombs

coulombs

C

1.0

Megaampere Hours

megaampereHours

MAh

3.6e9

Kiloampere Hours

kiloampereHours

kAh

3600000.0

Ampere Hours

ampereHours

Ah

3600.0

Milliampere Hours

milliampereHours

mAh

3.6

Microampere Hours

microampereHours

µAh

0.0036

Topics

Accessing the Base Unit

+ baseUnit

Returns the base electric charge unit. Equal to coulombs.

Accessing Predefined Units

coulombs

Returns the coulombs unit of electric charge.

megaampereHours

Returns the megaampere hours unit of electric charge.

kiloampereHours

Returns the kiloampere hours unit of electric charge.

ampereHours

Returns the ampere hours unit of electric charge.

milliampereHours

Returns the milliampere hours unit of electric charge.

microampereHours

Returns the microampere hours unit of electric charge.

Relationships

Inherits From

Conforms To

See Also

Electricity

NSUnitElectricCurrent

A unit of measure for electric current.

NSUnitElectricPotentialDifference

A unit of measure for electric potential difference.

NSUnitElectricResistance

A unit of measure for electric resistance.