A photovoltaic cell is connected across a variable load resistor of resistance \(R\). The current \(I\) supplied by the cell as a function of terminal voltage \(V\) is modeled by \(I(V) = I_0 \left(1 - \dfrac{V}{V_0}\right)\) for \(0 \le V \le V_0\), where \(I_0\) is the short-circuit current and \(V_0\) is the open-circuit voltage. What value of load resistance \(R\) maximizes the electrical power dissipated in the load resistor?