7.a) Describe the functioning of a BJT in common base configuration. b) Determine the collector current of a BJT with both of its junctions reverse biased. Assume Ico = 5A, IEO 3.58 A, N = 0.98 and any other parameter values as required. c) How do you identify the region of operation of a BJT to be saturation region from the values of various circuit currents? 8.a) Justify statement "Potential divider bias is the most commonly used biasing method" for BJT circuits. Explain how bias compensation can be done in such biasing through diodes. b) An NPN transistor with = 100 is used in common Emitter configuration with Collector - to - Base bias. If VCC = 10 V, RC = 1 K and VBE = 0 V, determine i)Rb such that quiescent Collector - to - Emitter Voltage is 4V. ii) The stability factor, 'S'.