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Quantities and Units - Shakil Raiman.

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Presentation on theme: "Quantities and Units - Shakil Raiman."— Presentation transcript:

1 Quantities and Units - Shakil Raiman

2 1.1: SI Base Units 1 Length Metre m 2 Mass Kilogram Kg 3 Time Second S
Sl No. Base Quantity Base Unit Symbol 1 Length Metre m 2 Mass Kilogram Kg 3 Time Second S 4 Current Ampere A 5 Temperature Kelvin K 6 Amount of Substance Mole Mol 7 Luminous Intensity Candela cd

3 1.2: SI Derived Units 1 Speed Distance/time ms-1 2 Acceleration
Sl No. Quantity Definition Derived Unit Base Units 1 Speed Distance/time ms-1 2 Acceleration Velocity/time ms-2 3 Force F=ma Newton(N) kgms-2 4 Pressure P=F/A Pascal(Pa) kgm-1s-2 5 Work W=F.d Joule (J) kgm-2s-2 6 Power P=W/t Watt (W) kgm-2s-3 7 Charge Q=It Coulomb(C) As 8 Potential difference V=W/Q Volt (V) kgm-2A-1s-3 9 Resistance R=V/I Ohm(Ω) kgm-2A-2s-3

4 1.3: Prefixes 1 pico p 10-12 2 nano n 10-9 3 micro µ 10-6 4 milli m
Sl No. Prefix Symbol Multiple Example 1 pico p 10-12 2 nano n 10-9 3 micro 10-6 4 milli m 10-3 5 Kilo K 103 6 Mega M 106 7 Giga G 109 8 Tera T 1012

5 1.4: Scalar and Vector Quantity
Sl No. Scalar Vector 1 has only magnitude and no direction has both magnitude and direction 2 can be added or subtracted algebraically can be added or subtracted graphically 3 Examples: Distance, Speed, Time Displacement, velocity Mass, amount of substance, charge Acceleration, Force, Temperature, Weight , Momentum Potential difference Magnetic flux density Resistance, Work Energy, Power Electric field strength

6 Thank You All Wish you all very good luck and excellent result.

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