Class

NSUnitElectricResistance

A unit of measure for electric resistance.

Declaration

@interface NSUnitElectricResistance : NSDimension

Overview

You typically use instances of NSUnitElectricResistance to represent specific quantities of electric resistance using the NSMeasurement class.

Electric Resistance

Electric resistance is the difficulty of passing an electric current through a conductor. The SI unit for electric resistance is the ohm (Ω), which is derived as the electric resistance that produces one ampere of current between two points in conductor with one volt of electric potential difference (1Ω = 1V/1A).

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

Name

Method

Symbol

Coefficient

Megaohms

megaohms

MΩ

1000000.0

Kiloohms

kiloohms

kΩ

1000.0

Ohms

ohms

1.0

Milliohms

milliohms

mΩ

0.001

Microohms

microohms

µΩ

0.000001

Topics

Accessing the Base Unit

+ baseUnit

Returns the base unit of electric resistance. Equal to ohms.

Accessing Predefined Units

megaohms

Returns the megaohms unit of electric resistance.

kiloohms

Returns the kiloohms unit of electric resistance.

ohms

Returns the ohms unit of electric resistance.

milliohms

Returns the milliohms unit of electric resistance.

microohms

Returns the microohms unit of electric resistance.

Relationships

Inherits From

Conforms To

See Also

Electricity

NSUnitElectricCharge

A unit of measure for electric charge.

NSUnitElectricCurrent

A unit of measure for electric current.

NSUnitElectricPotentialDifference

A unit of measure for electric potential difference.