Solve for U, V, R, Ω (complex solution)
U=12V
V\in \mathrm{C}
R=400\Omega
\Omega \in \mathrm{C}
Solve for U, V, R, Ω
U=12V
V\in \mathrm{R}
R=400\Omega
\Omega \in \mathrm{R}
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