Find the time constant, T, of the output current, i.(t), given the circuit in Fig. P7.7. Given R1 =8 k0, R2 =7 k0, R3=8 kQ, R4 = 11 k0, and C= 156 µF. CUF 6 V R1 kn www Figure P7.7 Notes on entering solution: R2 k ¹i(1) Enter your solution in seconds Enter your solution to 2 decimal points Do not include units in your answer ex. 5 seconds is entered as 5.00 R3 ΚΩ M 1=0 SR4k

7.101. The ac equivalent circuit for an amplifier is shown in Fig. P7.101.. Assume the capacitors have infinite value, R₁ = 502, R₂ = 4.7 kQ, Rc = 4.7 k2, and R3 = 10 km. Calculate the voltage gain for the amplifier if the MOSFET Q-point is (100 µA, 5 V). Assume K₁= 450 μA/V² and λ = 0.02 V-¹. Figure P7.101 R₁ Vi RG Rp R₂ Thévenin equivalent

In the figure below, after sitting for a long time in position a, the switch in the circuit was moved to position b att= 0. A student measured and plotted the current (i) flowing through the inductor (graph below) after the switch was moved. The data point on the graph is equal to 8.05A, which occurs at 5 milliseconds. What is the value for X, in milliseconds (the time at which the current is equal to 8.05A) ? a) What is the value of the current source Ix, in Amps? Enter only the numerical value. b) What is the value of the current source Iy, in Amps? Enter only the numerical value. c) What is the time constant, in milliseconds? Enter only the numerical value. d) What is the value of Ra, in Ohms? b Ra t = 0 500mH 10 7 6. 1 X time (ms) Inductor Current (A)