Units – Everyday Science
Measurement Units & Physical Quantities
Units play a fundamental role in understanding everyday science and physical phenomena. They are used to measure quantities such as force, temperature, electric current, and heat in a standardized way. This section provides a clear and quick reference to commonly used scientific units, helping students prepare for exams, quizzes, and competitive MCQs by strengthening their basic measurement concepts.
| Physical Quantity | Measuring Instrument |
|---|---|
| Force | Newton/ Dyne |
| Temperature | Kelvin/ Celsius/ Degree |
| Current | Ampere |
| Heat | Joule/ Calorie/ BTU |
| Pressure | Pascal/Torr |
| Radioactivity | Becquerel/Curie/Rutherford |
| Atomic energy | Rydberg/Joule |
| Voltage | Volt |
| Electric Potential Difference | Volt |
| Electric Charge | Coulomb |
| Power | Watt |
| Resistance | Ohm |
| Conductivity | Mho |
| Energy | Joule/ Erg |
| Distance Between Stars And Planets | Light Year |
| Wavelength | Angstrom |
| Volume | Acre-Foot/Litre |
| Frequency | Hertz |
| Rate of flow of water | Cusec |
| Length | Meter/Fermi/Parsec |
| Optical Power Of A Lens or A Curved Mirror | Dioptre |
| Plane Angle | Radian |
| Luminous Intensity | Candela |
| Amount of Substance | Mole |
| Rate Of Decay Of Radioactive Material | Rutherford |
| Sedimentation Rate | SVEDBERG Unit |
| Induction | Henry |
| Magnetic flux | Maxwell/ Weber |
| Magnetic Flux Density/Magnetic Inductivity | Telsa/Gauss |
| Electric Conductance | Siemens |
| Angle | Degree |
| Solid Angle | Steradian |
| Torque | Foot-Pound |
| Mechanical work/Energy | Erg |
| Magneto Motive Force | Gilbert |
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