The Thévenin equivalent network seen by a load $R_o$ is depicted in Figure P2.72. Assume $V_T=10 \mathrm{~V}, R_T=2 \Omega$, and that the value of $R_o$ is such that maximum power is transferred to it. Determine:
a. The value of $R_o$.
b. The power $P_o$ dissipated by $R_o$.