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    J249

    OCR GCSE Physics Equation Sheet (J249)

    Free OCR GCSE Physics equation sheet: open the official OCR (J249) PDF plus all 31 formulas listed by topic, showing which 1 you must memorise.

    31

    Formulas listed

    1

    You must memorise

    30

    Given in the exam

    Official OCR Gateway Physics Equation Sheet (J249)

    Official OCR PDF

    Open on OCR

    Particles

    Density

    Given in exam
    ρ=mV\rho = \dfrac{m}{V}

    Gas law (constant temperature)

    Given in exam
    pV=constantpV = \text{constant}

    Pressure in a column of liquid (Higher)

    Given in exam
    p=hρgp = h\rho g

    Higher tier only.

    Energy

    Change in thermal energy

    Given in exam
    ΔE=mcΔθ\Delta E = mc\Delta\theta

    Specific latent heat

    Given in exam
    E=mLE = \text{mL}

    Kinetic energy

    Given in exam
    Ek=12mv2E_k = \tfrac{1}{2}mv^2

    Power (work)

    Given in exam
    P=WtP = \dfrac{W}{t}

    Energy stored in a spring

    Given in exam
    E=12kx2E = \tfrac{1}{2}kx^2

    Gravitational potential energy

    Given in exam
    E=mghE = \text{mgh}

    Efficiency

    Given in exam
    efficiency=useful output energyinput energy\text{efficiency} = \dfrac{\text{useful output energy}}{\text{input energy}}

    Motion

    Distance travelled

    Given in exam
    s=vts = \text{vt}

    Acceleration

    Given in exam
    a=v−uta = \dfrac{v - u}{t}

    SUVAT

    Given in exam
    v2−u2=2asv^2 - u^2 = 2\text{as}

    Momentum (Higher)

    Given in exam
    p=mvp = \text{mv}

    Higher tier only.

    Forces

    Force = mass × acceleration

    Given in exam
    F=maF = \text{ma}

    Work done

    Given in exam
    W=FsW = \text{Fs}

    Hooke's law

    Given in exam
    F=kxF = \text{kx}

    Weight

    Given in exam
    W=mgW = \text{mg}

    Pressure

    Given in exam
    p=FAp = \dfrac{F}{A}

    Moment

    Given in exam
    M=FdM = \text{Fd}

    Electricity

    Charge

    Given in exam
    Q=ItQ = \text{It}

    Potential difference (Ohm's law)

    Given in exam
    V=IRV = \text{IR}

    Energy transferred (charge × pd)

    Given in exam
    E=QVE = \text{QV}

    Electrical power

    Given in exam
    P=VIP = \text{VI}

    Power (I² × R)

    Given in exam
    P=I2RP = I^2 R

    Energy transferred (power × time)

    Given in exam
    E=PtE = \text{Pt}

    Transformer power (Higher)

    Given in exam
    VpIp=VsIsV_p I_p = V_s I_s

    Higher tier only.

    Magnetism

    Force on a conductor (Higher)

    Given in exam
    F=BILF = \text{BIL}

    Higher tier only.

    Transformer equation (Higher)

    Given in exam
    VpVs=npns\dfrac{V_p}{V_s} = \dfrac{n_p}{n_s}

    Higher tier only.

    Waves

    Wave speed

    Given in exam
    v=fλv = f\lambda

    Time period

    Memorise
    T=1fT = \dfrac{1}{f}

    Not printed on the OCR equation sheet.

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