The coulomb. It is the charge transported by 1 ampere of current in 1 second.
The SI unit of charge is the coulomb. In the SI, this is NOT a "base unit"; it's a derived unit - 1 coulomb = 1 ampere x 1 second.
coulomb
no, but i sure as can imagine a system of base units in which "amount of substance", "thermodynamic temperature", and "luminous intensity" are not included (they can be derived from the base units) and one where electic charge replaces electric current as a base unit.
No, a coulomb is a derived unit. A base unit is a unit that isn't made by combining other units. There are seven base units, including metre (length), kilogram (mass), and second (time). Coulomb is the unit of electric charge. One coulomb is the charge delivered by a steady current one ampere in one second. It is derived from the base units ampere (electric current) and second (time).
The SI has 7 base units: http://en.wikipedia.org/wiki/SI_base_unit Also, the SI has tens of derived units - perhaps hundreds of them, since you can combine the base units in many ways. Those units are ultimately derived from the 7 base units. For example, units for area, volume, speed, force, energy, pressure, electric charge, voltage, and many more, are derived from some of the base units. http://en.wikipedia.org/wiki/SI_derived_unit
Seven metric base units make up the foundation of SI. And Specific combinations of SI base units yield derived units. That's why the differ.
the international system of units or SI units have 7 base units for the measurement of different types of quantities. it uses the following units: meter - length kilogram - mass second - time kelvin - temperature ampere - current candela - luminous intensity mole - amount of substance
no, but i sure as can imagine a system of base units in which "amount of substance", "thermodynamic temperature", and "luminous intensity" are not included (they can be derived from the base units) and one where electic charge replaces electric current as a base unit.
No, a coulomb is a derived unit. A base unit is a unit that isn't made by combining other units. There are seven base units, including metre (length), kilogram (mass), and second (time). Coulomb is the unit of electric charge. One coulomb is the charge delivered by a steady current one ampere in one second. It is derived from the base units ampere (electric current) and second (time).
The SI has 7 base units: http://en.wikipedia.org/wiki/SI_base_unit Also, the SI has tens of derived units - perhaps hundreds of them, since you can combine the base units in many ways. Those units are ultimately derived from the 7 base units. For example, units for area, volume, speed, force, energy, pressure, electric charge, voltage, and many more, are derived from some of the base units. http://en.wikipedia.org/wiki/SI_derived_unit
The area of a triangle is half base times height so any triangles whose base times height is 60 units will have an area of 30 square units e.g. base = 10 units, height = 6 units; base = 5 units, height = 12 units; base = 7.5 units, height = 8 units.
In a system of units such as the SI, BASE UNITS are defined; other units are derived from those.For example, in the SI, the meter, the kilogram, and the second are base units; the units for area (meters squared), for speed and velocity (meters/second), etc. are derived from the base units. Which units are base units, and which units are derived units, really depends on how the unit is defined. For example, in the SI, pressure is a derived unit; but you can just as well invent a system in which pressure is a base unit, and some other units, that are base units in the SI, are derived in this new system.
suplementary units are dimendionless and are not derived from other (base) units while derived units are derived from base units and they do have dimionsions.
The unit of charge is coulombs
Ampere = Coloumb / second is the same as saying that Coloumb = Ampere x second. Any of the two electrical units can be derived from the other one. Ampere is NOT a "fundamental quantity"; it is an SI base unit. The base units are not necessarily those that are somehow considered more "fundamental" than others; instead, the base units are those that can be measured with a great accuracy. In the case of current vs. charge, it seems that measuring a current can be done with greater accuracy than measuring a charge directly; therefore, the current is the base unit, and the current is derived. However, this doesn't make current any more "fundamental" than charge.
the 3 main base units would be, > ?
49.5 units
The SI has seven base units (kilogram, meter, second, ampere, kelvin, mole, candela), and lots of derived units - for example, meter/second for speed/velocity, coulomb = ampere x second for electrical charge, etc.
derived units come from basic units such as length, time, electrical current.AnswerIn SI, Derived Units are any units that are not Base Units. There are seven Base Units, from which all Derived Units are formed. For example, a coulomb (derived unit) is equal to an ampere second (both Base Units).