Using superposition, find $I_o$ in the circuit shown given that $V_1 = 10V$, $I_1 = 6mA$, $R_1 = 1k\Omega$, $R_2 = 15k\Omega$, $R_3 = 9k\Omega$, and $R_4 = 8k\Omega$.
The contribution of $V_1$ to $I_o$ is
The contribution of $I_1$ to $I_o$ is
The total result is $I_o = $ mA
mA
mA