Question

Circuits

The amplifier shown below is very close to being an ideal trans resistance amplifier with a gain of 4.7 kQ.If Rg is 1.6 kohms and RL is 2.0 kohms, calculate the overallgain Vo/Vg.

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Question 45529

Circuits

11) From your answer in (10), does the 4V 'DC' or steady state voltage impact the value of the displacement current, Ic.

Question 45528

Circuits

\text { 10) Assuming } I_{C}=C \frac{d V_{C}}{d t} \text {, find the displacement current for } V_{C}=e^{-\omega t}+4 V \text { and } V_{C}=
sin(wt) + 4 V.

Question 45527

Circuits

9) Based on your answer in (7), can you apply an arbitrarily large field or voltage across a dielectric? What is the name for this limitation and what is its value for Air and Glass (SiO2)?

Question 45526

Circuits

8) Remembering quantum tunneling from Chapter 3, what is happening to the probability of a tunneling event as the "thickness" of the barrier representing the dielectric decreases?

Question 45525

Circuits

7) What happens to the relative "thickness", or distance an electron must travel in a straight line across the dielectric, as you increase the voltage?

Question 45524

Circuits

6) Redraw the diagram in (5) with a small positive voltage on the right-hand side (no voltage or OVon the left-hand side).

Question 45523

Circuits

5) Draw the energy band diagram of a capacitor made of two aluminum plates with a glass dielectric. The capacitor should have zero applied voltage.

Question 45522

Circuits

\text { Given } C=\frac{\varepsilon A}{d}=\frac{q}{v} \text { and the units of } \varepsilon \text { are } F / m \text {, determine the equivalent units of the Farad (I.E. in }
terms of other available units).

Question 45521

Circuits

3) What is the result of increasing thickness of a dielectric (increasing d in the capacitor equation)while keeping the amount of charge on each plate the same? Think in terms of the capacitance and the voltage measured across the capacitor.

Question 45520

Circuits

2) Define the displacement current. Are charges physically flowing through the dielectric?

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