Page 28 - Maxwell House

8 Chapter 1

Base Unit name Base Unit symbol Quantity name
3 Second s Time
4 Ampere A electric current
5 Kelvin K thermodynamic temperature
6 Mole mol amount of substance
7 Candela cd luminous intensity
8 Radian rad dimensionless
9 Steradian rad Dimensionless
2
1.3.2 Derived SI Units
The following set of derived units is open-ended and was restricted by the quantities primarily
used in electrodynamics.
Table 1.5

Quantity Name In terms of Derived In terms of
derived
base units unit units
1 Area/Surface area square meter m A m
2
2
2 Volume cubic meter m V m
3
3
3 Speed/Velocity meter per second m s m s
−1
−1
4 Mass density kilogram per
−3
−3
cubic meter kg m g kg m
5 Force Newton (N) kg m s F kg m s
−2
−2
6 Volume electric
current Ampere (A) A I
7 Volume electric Ampere per
−2
−2
current density square meter A m I m
8 Surface electric current Ampere per A m I m
−1
−1
density meter
9 Electric charge Coulomb (C) A s I s
10 Volume electric charge Coulomb per A s m I s m
−3
−3
density cubic meter
11 Surface electric charge Coulomb per
−2
−2
density square meter A s m I s m
12 Volume magnetic
−1
−3
2
current Volt (V) m kg A V
13 Volume magnetic Volt per square kg A V m
−2
−1
−3
current density meter
14 Surface magnetic
−3
−1
−1
−1
current density Volt per meter m kg A V m
15 Magnetic charge Weber (Wb) m kg A s V s
−2
−1
2
16 Volume magnetic Weber per cubic
−2
−1
−3
−1
charge density meter m kg A s m
17 Surface magnetic Weber per kg A s m
−1
−2
−2
charge density square meter
18 Energy/Work Joule (J) m kg s F m
−2
2
19 Power Watt (W) m kg s P J s
−3
2
−1
20 Electric potential Volt (V) m kg A V W A
−1
−3
2
−1
21 Electric field strength Volt per meter m kg A E V m
−3
−1
−1