One conducting metal sphere contains `10^23` atoms. If from 0.1 % atoms one electrons are removed, then electric charge deposited on sphere is .......

Options

A. 16 C
B. 0.16 C
C. 0.016 C
D. 1.6 C

Answer

A

Explanation

Sphere become positive on removing electron from it. Number of electrons removes from the sphere.
`N = 0.1%` of `10^(23) = 10^(23) xx 1/1000 = 10^(20)`
`therefore` Charge on the sphere Q = Ne
`therefore Q = 10^(20) xx 1.6 xx 10^(-19) = 16 C`