1.16 For the circuit shown in Fig. P1.16, find the current in each of the three resistors and the voltage (with respect to ground) at their common node using two methods: (a) Loop Equations: Define branch currents I1 and I2 in R1 and R 2, respectively; write two equations; and solve them. (b) Node Equation: Define the node voltage V at the common node; write a single equation; and solve it. Which method do you prefer? Why?