Question

When $10^{19}$ electrons are removed from a neutral metal plate, the electric charge on it is (coulomb)

• A. $10^{-19}$
• B. +1.6
• C. -1.6
• D. $10^{-10}$

Answer 1

Answer: (B)

Charge on $10^{19}$ electron = $1.6\times 10^{-19}\times 10^{19}$ = 1.6 C