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How many electrons must be removed from ...

How many electrons must be removed from a piece of metal to give it a positive charge of `1.0 xx 10^(-7)C`

A

`6.25 xx 10^(11)`

B

`62.5 xx 10^(11)`

C

`62.5 xx 10^(-11)`

D

`625 xx 10^(11)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • A body has a positive charge of 8xx10^(-19)C . It has :

    A
    an excess of 5 electrons
    B
    a deficiency of 5 electrons
    C
    an excess of 8 electrons
    D
    a deficiency of 8 electrons

  • The number of electrons that must be removed from an electrically neutral silver dollar to give it a charge of +2.4C is

    A
    `2.5xx10^(19)`
    B
    `1.5xx10^(19)`
    C
    `1.5xx10^(-19)`
    D
    `2.5xx10^(-19)`

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