Units of physical quantities
1. State the basic, supplementary, and multiple physical units.
Solution:
Basic physical units:
| Quantity | Name | Symbol |
| Length | meter | m |
| Mass | kilogram | kg |
| Time | second | s |
| Electric current | ampere | A |
| Thermodynamic temperature | kelvin | K |
| Amount of substance | mole | mol |
| Luminous intensity | candela | cd |
Supplementary physical units:
| Quantity | Name | Symbol |
| Plane angle | radian | rad |
| Solid angle | steradian | sr |
Multiple physical units:
| giga | G | 109 |
| mega | M | 106 |
| kilo | k | 103 |
| milli | m | 10-3 |
| micro | μ | 10-6 |
| nano | n | 10-9 |
| pico | p | 10-12 |
| hecto | h | 102 |
| deca | da | 101 |
| deci | d | 10-1 |
| centi | c | 10-2 |
2. State the derived physical units with names.
Solution:
Derived physical units with names:
| Quantity | Name | Symbol | Other units |
| Frequency | hertz | Hz | s-1 |
| Force | newton | N | |
| Pressure | pascal | Pa | N·m-2 |
| Energy, work, heat | joule | J | N·m |
| Power | watt | W | N·s-1 |
| Electric charge | coulomb | C | A·s |
| Electric voltage | volt | V | J·C-1 |
| Electric capacitance | farad | F | C·V-1 |
| Electric resistance | ohm | Ω | V·A-1 |
| Electric conductance | siemens | S | A·V-1 |
| Magnetic flux | weber | Wb | V·s |
| Inductance | henry | H | Wb·A-1 |
| Magnetic induction | tesla | T | Wb·m-2 |
| Luminous flux | lumen | lm | cd·sr |
| Illuminance | lux | lx | lm·m-2 |
