There are several derived units in physics. Some of the most widely used SI derived units in physics are given below.
| Sl. No | Unit(s) Name | SI Unit | SI Unit Symbol | Expressed in SI Base Unit | Expressed in other SI units |
|---|---|---|---|---|---|
| 1. | Force, Weight | Newton | N | kg⋅m⋅s-2 | – |
| 2. | Frequency | Hertz | Hz | s-1 | – |
| 3. | Electric charge | Coulomb | C | s⋅A | – |
| 4. | Electric potential (Voltage) | Volt | V | kg.m2.s-3.A-1 | W/A |
| 5. | Inductance | Henry | H | kg.m2.s-2.A-2 | Wb/A |
| 6. | Capacitance | Farad | F | kg−1.m−2.s4.A2 | C/V |
| 7. | Resistance, Impedance, Reactance | Ohm | Ω | kg.m2.s−3.A−2 | V/A |
| 8. | Electrical conductance | Siemens | S | kg−1.m−2.s3.A2 | Ω−1 |
| 9. | Magnetic flux | Weber | Wb | kg.m2.s−2.A−1 | V⋅s |
| 10. | Magnetic flux density | Tesla | T | kg.s−2.A−1 | Wb/m2 |
| 11. | Energy, Work, Heat | Joule | J | kg.m2.s−2 | N⋅m = Pa⋅m3 |
| 12. | Power, Radiant flux | Watt | W | kg.m2.s−3 | J/s |
| 13. | Angle | Radian | rad | m.m−1 | – |
| 14. | Radioactivity | Becquerel | Bq | s-1 | – |
| 15. | Luminous flux | Lumen | lm | cd | cd⋅sr |
These were a few widely used units along with their SI units. Apart from these units, there are certain additional units that are commonly seen in physics. Some of such units are:
- The SI unit of momentum (P) is kilogram meter per second (kg⋅ m/s)
- The SI unit of the magnetic field (B) is Tesla
- The SI unit of heat is the unit joule
- The SI unit of velocity is m/s
Students are suggested to be thorough with these aforementioned important physics SI units lists. In the exam, it is important to write the units and dimensions corresponding to the quantity as an answer is considered incomplete without its unit.
Various units and SI units of based articles related to physics are provided here. In physics, there are various terms and quantities. The different quantities in physics can be expressed in various units. Students who want to excel in physics must know the CGS and SI units fluently to score well in their examination. The detailed SI Units and CGS Units are given below to help students understand the respective topic in an effective manner.
Advantages of Learning SI Units and CGS Units
- Questions related to SI Units and CGS Units are very common in physics exams.
- These units are given in an interactive manner and are easily understandable to help the students learn better.
- The units and their explanation will help the students to get an in-depth idea about the respective topics.
- The units are given in points to helps students retain the concept for a longer period of time.