Physics - Measurement Units
The following table illustrates the major measuring units in physics −
| Mass And Related Quantities |
| Quantity |
Symbol |
Unit |
| Density |
ρ |
kg.m-3 |
| Volume |
V |
m-3 |
| Force |
F |
Newton (N) |
| Torque |
M |
N.m |
| Pressure |
P |
Pascal (Pa) |
| Dynamic viscosity |
η |
Pa.s |
| Acoustic pressure |
p |
Pascal (pa) |
| Dynamic volume |
v |
m3 |
| Electricity and Magnetism |
| Quantity |
Symbol |
Unit |
| Power |
P |
watt (W = J/s) |
| Energy |
W |
joule (J = N.m) |
| Magnetic field strength |
H |
ampère per metre (A/m) |
| Electric field |
E |
volt per metre (V/m) |
| quantity of electricity |
Q |
coulomb (C = A.s) |
| Electrical resistance |
R |
ohm (Ω = V/A) |
| electrical capacitance |
C |
farad (F = C/V) |
| Potential difference |
U |
volt (V = W/A) |
International System of Units |
| meter |
m |
Length |
| kilogram |
kg |
Mass |
| second |
s |
Time |
| ampere |
A |
Electric Current |
| kelvin |
K |
Thermodynamic temperature |
| mole |
mol |
Amount of substance |
| candela |
cd |
Luminous intensity |
| radian |
rad |
Angle |
| steradian |
sr |
Solid Angle |
| hertz |
Hz |
Frequency |
| newton |
N |
Force, weight |
| pascal |
Pa |
pressure, stress |
| joule |
J |
energy, work, heat |
| watt |
W |
Power, radiant, flux |
| coulomb |
C |
Electric charge |
| volt |
V |
Voltage, electromotive force |
| farad |
F |
Electric capacitance |
| ohm |
Ω |
Electric resistance |
| tesla |
T |
Magnetic flux density |
| degree Celsius |
0C |
Temperature |
| becquerel |
Bq |
radioactivity |
| henry |
H |
Magnetic induction |
| Angstrom |
Å |
Wave length |
Conversion of Units
| Unit I |
Value in another unit |
| 1 Inch |
2.54 centimeter |
| 1 Foot |
0.3048 meter |
| 1 Foot |
30.48 centimeter |
| 1 Yard |
0.9144 meter |
| 1 Mile |
1609.34 meter |
| 1 Chain |
20.1168 meter |
| 1 Nautical mile |
1.852 kilometer |
| 1 Angstrom |
10-10 meter |
| 1 Square inch |
6.4516 square centimeter |
| 1 Acre |
4046.86 square meter |
| 1 grain |
64.8 milligram |
| 1 dram |
1.77 gm |
| 1 ounce |
28.35 gm |
| 1 pound |
453.592 gram |
| 1 horse power |
735.499 Watt |
