Question

When ${10}^{19}$ electrons are removed from a neutral metal plate through some process, the charge on it becomes _________

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

Answer 1

The correct option is B $+1.6C$

$\text{Step 1: Charge Removed}$

Charge Removed $=Ne={10}^{19}\times (-1.6\times {10}^{-19}C)$

$=-1.6C$

$\text{Step 2: Charge appearing on Metal}$

Initially the metal is neutral, when we remove a Negative charge of $-1.6C$ , So equal and opposite positive charge $=+1.6C$ will appear on the metal plate.

Hence correct answer is Option $B$