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For a fixed bias circuit the drain current was 1mA, VDD=12V, determine drain resistance required if VDS=10V?

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For a fixed bias circuit the drain current was 1mA, VDD=12V, determine drain resistance required if VDS=10V?

(a) 1KΩ

(b) 1.5KΩ

(c) 2KΩ

(d) 4KΩ

I have been asked this question in class test.

I'm obligated to ask this question of Biasing the FET in chapter Field-Effect Transistors of Electronic Devices & Circuits

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Right choice is (c) 2KΩ

Explanation: VDS=VDD-ID RD

=>10=12-RD×1mA

=>RD=2/1mA=2 KΩ.

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