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An oil drop has 6.39 xx 10^(-19)C charg...

An oil drop has `6.39 xx 10^(-19)C` charge .How many electrons does this oil drop has ?

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To find the number of electrons in an oil drop with a given charge, we can follow these steps: ### Step 1: Identify the given charge The charge of the oil drop is given as: \[ q = 6.39 \times 10^{-19} \, \text{C} \] ### Step 2: Know the charge of a single electron The charge of a single electron is: ...
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Knowledge Check

  • An oil drop of diameter 4 xx 10^(-6) m falls through air. iF the densities of the oil and air are 900 kg/m^(3) and 1.293 kg/m^(3) respectively and the coefficient of viscosity of air is 2.0 xx 10^(-5) Ns//m^(2) , then the terminal velocity of oil drop will be

    A
    `0.2 xx 10^(-4)` m/s
    B
    `2xx 10^(-4)` m/s
    C
    `4 xx 10^(-4)` m/s
    D
    `8 xx 10^(-4)` m/s
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