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A polythene piece rubbed with wool is found to have a negative charge of `3.2xx10^(-7)`C (i) Estimate the number of electrons transferred. (ii) Is there a transfer of mass from wool to polythene ?

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Apolythene piece rubbed will wool is found to have a negative charge of 3.0xx10^(-7)C . (a) Estimate the number of electrons transferred (from which to which )? (b) Is there a transfer of mass from wool to polythene?

Knowledge Check

  • A polythene piece rubbed with wool is found to have a negative charge of 6xx10^(-7)C . The number of electrons transferred to polythene from wool is

    A
    `3.75xx10^(10)`
    B
    `9.6xx10^(10)`
    C
    `9.6xx10^(12)`
    D
    `3.75xx10^(12)`

  • A polythene piece rubbed with wool is found to have a negative change of 6.4 xx 10^(-19)C . How many electrons have been transferred during the process?

    A
    `4 xx 10^(12)`
    B
    `4 xx 10^(11)`
    C
    `4 `
    D
    None of these

  • A polythene piece rubbed with wool is found to have negative charge of 3.6xx10^(-7)C . Calculate the number of electrons transferred from wool to polythene. If an electron has a mass 9.1 xx 10^(-31) kg , find the mass transferred to polythene.

    A
    `2.25xx10^(10) kg`
    B
    `6.25xx10^(-18) kg`
    C
    `2.05xx10^(-18) kg`
    D
    `4.15xx10^(-18) kg`

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    A polythene piece rubbed with wool is found to have a negative charge of 3.2 xx 10^(-7) C . The number of electrons transferred is x xx 10^(12) . Find the value of x.

    An ebonite rod is rubed with fur and is found to have a charge of -3.2xx10^(-8)C on it (a) Calculate the number of electrons transferred, (b) What is the charge of rubbing?

    A glass rod is rubbed with a silk cloth. The glass rod acquires a charge of +19.2xx10^(-19)C . (i) find the number of electrons lost by glass rod. (ii) Find the negative charge acquired by silk. (iii) Is there transfer of mass from glass to silk?

    An object with a net positive charge of 2 xx 10^(-12) C contains 1.5 xx 10^7 protons. Calculate the number of electrons present on it.

    An ebonite rod acquires a negative charge of 3.2 xx 10^(-10) C. The number of excess electrons it has is given by

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