Practice I-v Characteristics (4.4) - MOSFETs - Basic Operation and Characteristics
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I-V Characteristics

Practice - I-V Characteristics

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the threshold voltage (V_th)?

💡 Hint: It’s the voltage level needed to establish a conducting path.

Question 2 Easy

Name the two main regions of operation for a MOSFET.

💡 Hint: Think about how a MOSFET behaves under different pressure.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the triode region equation represent?

Current in saturation
Current in triode
Threshold voltage

💡 Hint: Focus on what happens when a MOSFET is partially on.

Question 2

True or False: I_D remains constant in the saturation region regardless of V_DS.

True
False

💡 Hint: Think about the control exerted by the gate voltage.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A MOSFET with a W/L ratio of 5, $μ_n$ of 500 cm²/V·s, and $C_{ox}$ of 10^-6 F/m² operates at $V_{GS} = 1V$ and $V_{th} = 0.5V$. Calculate $I_D$ when $V_{DS} = 0.2V$.

💡 Hint: Substitute the values carefully and watch for unit conversions.

Challenge 2 Hard

Evaluate how increasing $V_{GS}$ beyond the threshold impacts the current in the saturation region when $V_{DS}$ is fixed.

💡 Hint: Confirm how each term in the saturation equation reacts to changes in V_{GS}.

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Reference links

Supplementary resources to enhance your learning experience.