Problem:

The point$-$like charge $Q1=+3nC$ is fixed to whereas another charge $Q2=+3nC$ is fixed to How much work does it require to bring a third charge $Q3=+10nC$ from infinitively far away to the location

$1\mathrm{.}1{10}^{-7}J$

$0$ J

$0\mathrm{.}54{10}^{-7}J$

$0\mathrm{.}22{10}^{-7}J$

$0\mathrm{.}11{10}^{-7}J$