How many electrons must be removed from a piece of metal to give it a positive charge of 1 × 10-7 C ?

Posted by Ankita Singh (Apr 20, 2017 2:04 p.m.) (Question ID: 4969)

• Let the number of electrons removed be n

Charge on one electron = {tex} 1.6 \times 10^{-19} {/tex}

Then

{tex}=> n \times 1.6 \times 10^{-19} = 1\times 10^{-7}{/tex}

{tex}=> n = {1\times 10^{-7} \over 1.6 \times 10^{-19} }{/tex}

{tex}=> n = 6.25 \times 10^{11} {/tex}

Answered by Payal Singh (Apr 22, 2017 11:38 a.m.)
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