Answer
$\lambda = -5.19\times 10^{-14}~C/m$
Work Step by Step
We can find the linear charge density as:
$\lambda = \frac{-q}{L}$
$\lambda = \frac{-4.23\times 10^{-15}~C}{0.0815~m}$
$\lambda = -5.19\times 10^{-14}~C/m$
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