The zero-, positive-, and negative-sequence bus impedance matrices for a two-bus three-phase power system are

\[\begin{aligned}& \boldsymbol{Z}_{\text {bus } 0}=j\left[\begin{array}{c|c}0.10 & 0 \\\hline 0 & 0.10\end{array}\right] \text { per unit } \\& \boldsymbol{Z}_{\text {bus 1}}=\boldsymbol{Z}_{\text {bus 2 }}=j\left[\begin{array}{c|c}0.20 &0.10\\\hline0.10& 0.30\end{array}\right] \text { per unit }\end{aligned}\]

Determine the per-unit fault current and per-unit voltage at bus 2 for a bolted threephase fault at bus 1 . The prefault voltage is 1.0 per unit.