a. For the circuit shown in figure 1 and assuming the values VD = 0.7 and R1 = RL=R2= 2KN. Further Vs(t) =10 sin(2nf). Determine absolute value of the peak current through the load resistor RL D: ER R D Figure 1 b. Find the value of RX in Figure 4. 4kO Rx + 9V 21 V= 3k) Figure 4 Q3. Calculate the value of current i, in the circuit given in Figure 5. 4 22 10 8 35 V Figure 5 ww ww ww