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In an FET as VGS is changed from zero to increasing reverse bias, the value of gm—
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- Increases
- Decreases
- Remains constant
- Falls suddenly to zero
Correct Option: B
We know that
| gm = gm0 |  | 1 - | VGS |  |
| VP |
From the above relation it is clear that as VGS is changed from zero to increasing reverse bias, the value of gm decreases.
