Question

How many electrons would have to be removed from or added to a penny to leave it charged with 1.0 x 10-6 C

Answer 1

$we \: know \: that \: \\ charge \: of \: one \: electron = 1.6 \times {10}^{ - 19} \\ total \: electron \: required = \frac{total \: charge \: in \: columb}{charge \: on \: one \: electron} \\ total \: electron \: required = \frac{1 \times {10}^{ - 6} }{1.6 \times {10}^{ - 19} } = 6.25 \times {10}^{12} \\ (hope \: it \: helps \: u)$