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  • Physics Notes-Measurement Units-For W.B.C.S Preliminary Examination
    Posted on November 19th, 2018 in General Science
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    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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