Physics Notes-Measurement Units-For W.B.C.S Preliminary Examination
The following table illustrates the major measuring units in physics.Continue Reading Physics Notes-Measurement Units-For W.B.C.S Preliminary Examination.
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 |
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