Question

10${}^6$ electrons are taken out of a pith ball. The positive charge on the pith ball is

• A. $1.6\times {10}^{-13}$C
• B. $1.6\times {10}^{-19}$C
• C. $1.6\times {10}^{-25}$C
• D. None of the above

Answer 1

The correct option is A $1.6\times {10}^{-13}$C

Number of electrons = number of protons

charge on proton = 1e

$1e=+1.6\times {10}^{-19}C$

$for{10}^{6}protons$

$netcharge=1.6\times {10}^{-19}\times {10}^6=1.6\times {10}^{-13}C$

Option A is correct.