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QPage 351: Q10: HC Verma: Concepts of Physics - Volume 2 Electric Current through Gases Page 351: Q10 Solution: Why is the linear portion of the triode characteristic chosen…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often think any part of the triode’s characteristic is linear. In reality the linear segment is only a small portion near the origin; the device must be biased so that the quiescent point lies inside this segment and the input signal swing stays within it, otherwise the output will be distorted.

Why is the linear portion of the triode characteristic chosen to operate the triode as an amplifier?

Step-by-Step Verified Solution

**Answer:** The linear portion gives a proportional output. **Step-by-Step Explanation:** In the linear region of the triode characteristic curve, the plate current is directly proportional to the grid voltage. This ensures that the output signal is an amplified version of the input signal without distortion. If operated in a non-linear region, the output would be distorted .

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