Question
The threshold voltage of an $n$-channel enhancement mode MOSFET is $0.8 \mathrm{~V}$. The MOSFET conducts a current of $2 \mathrm{~mA}$ with a $V_{G S}=2 \mathrm{~V}$ and $V_{D S}=5 \mathrm{~V}$. What is the drain current when $V_{G S}$ is doubled?
Step 1
We have the threshold voltage \( V_{th} = 0.8 \, \text{V} \), the initial gate-source voltage \( V_{GS} = 2 \, \text{V} \), the drain-source voltage \( V_{DS} = 5 \, \text{V} \), and the initial drain current \( I_D = 2 \, \text{mA} \). Show more…
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