Which of the following electrical devices do you like the mo

Which of the following electrical devices do you like the most? Resistor Diode MOSFET BJT None of them What is the gain of the following transresistance amplifier? 10V/V 1000V/V -10 ohm 10000 ohm What is the input resistance of the following amplifier? 4k ohm 200 ohm 1mA infinity ohm What is the amount of current flowing out of the op-amp in the following circuit when V_1 is 1V? Assume the op-amp is ideal. 5mA -50 mu A 0A -5V Consider an NMOS transistor with V_G = 5V, V_S = 2V, V_D = 3V, and V_t = 0.8V. In which of operation is the transistor? Triode Saturation Cutoff Active

Solution

1. Resistor is the electrical device remaining are belongs to electronics

2. Transresistance =10/(1×10^-3)=10000 ohms.

3. Input resistance=4/(1×10^-3)= 4K ohms

4. Voltage at the positive terminal=0 volts because V(-ve)=0.

I=(1-0)/(20×1000)=50×10^-6 amps.This current has to flow through feedkback resistor(outside of op amp).

5. Vgs=Vg-Vs=5-2=3volt

Vds=Vd-Vs=3-2=1volt

Vgs-Vt=3-0.8=2.2>Vds=1.

therefore, the NMOS transistor works in triode region.