Question 1. A pnp transistor with β = 60 is connected in a common-base configuration as shown in figure P5.8 (a) The emitter is driven by a constant-current source with I_E = 0.75 mA. Determine I_B, I_C, α, and V_C. (b) Repeat part (a) if I_E = 1.5 mA. (c) Is the transistor biased in the forward-active mode for both parts (a) and (b)? Why or why not?

Figure 5.8

Question 2. For all the transistors in Figure P5.17,  β = 75. The results of some measurements are indicated on the figures. Find the values of the other labeled currents, voltages, and/or resistor values.

Question 3. The transistor in the circuit shown in Figure P5.27 is biased with a constant current in the emitter. If I_Q = 1 mA, determine V_C and V_E Assume β = 50.

Question 4. For the circuit shown in Figure P5.29, if β = 200 for each transistor, determine: (a)I_E1 (b) I_E2, (c) V_C1, and (d) V_C2.