Use Thevenin's theorem to find the voltage gain of the circuit shown given that $I_1 = 11 A$, $R_1 = 14 \Omega$, $R_2 = 7 \Omega$, $R_3 = 17 \Omega$, and $G = 5 \Omega^{-1}$.

With $R_1$ removed, the open circuit voltage at the terminals of $R_1$ is $V$
The Norton current (pointing down) obtained when replacing $R_1$ by a wire, $I_{N} =$ $A$

With $R_1$ removed, the Thevenin equivalent resistance at the terminals of $R_1$ is $\Omega$
$I_o =$ $A$