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Two positively charged small particles, ...

Two positively charged small particles, each of mass `1.7 xx 10^(-27) kg` and carrying a charge of `1.6 xx 10^(-19) C` are placed apart at a separation r. If each one experiences a repulsive force equal to its weight find their separation. [0.117 m]

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Knowledge Check

  • A proton has a mass 1.67 xx 10^(-27) kg and charge + 1.6 xx 10^(-19) C. If the proton is accelerated through a potential difference of million volts, then the kinetic energy is

    A
    `1.6 xx 10^(-15)` J
    B
    `1.6 xx 10^(-13)` J
    C
    `1.6 xx 10^(-21)` J
    D
    `3.2 xx 10^(-13)`J

  • A charged water drop of weight 4 xx 10^(-18) kg and charge 1.6 xx 10^(-19) C is stable in an electric field . What is the intensity of electric field

    A
    `150 V m^(-1)`
    B
    `200 V m^(-1)`
    C
    `250 V m^(-1)`
    D
    `50 V m^(-1)`

  • The electric field that can balance a charged particle of mass 3.2xx10^(-27) kg is (Given that the charge on the particle is 1.6xx10^(-19)C )

    A
    `19.6xx10^(-8)NC^(-1)`
    B
    `20xx10^(-6)NC^(-1)`
    C
    `19.6xx10^(8)NC^(-1)`
    D
    `20xx10^(6)NC^(-1)`

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    The de Broglie wavelength of positively charged particle of mass 3.35xx10^(-27) kg is 19 nm . Calculate the kinetic energy of the particle .

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    Two charges of 10 C and - 15 C are separated in air by 1m. The ratio of force exerted by one on the other is

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