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In one gram solid, there are $10^{22}$ atoms. If one electron is removed from each one of $0.01 \%$ of atoms the charge gained by solid would be :

$(A)\;+0.16 C\\ (B)\;-0.16 C \\ (C)\; +1.6C \\ (D)\;-1.6 C $

1 Answer

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$n= \large\frac{0.01}{100}$$ \times 10^{22}$
$\quad= 10^{18}$
$q= ne$
$\quad= 10^{18} \times 1.6 \times 10^{-19}$
$\quad= 0.16 C$
Hence A is the correct answer.

 

answered Jan 8, 2014 by meena.p
edited Aug 1, 2014 by thagee.vedartham
 

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