Question

For a triode, at $V_{g} = - 1$ volt, the following observations were taken $V_{p} = 75V,I_{p} = 2mA$,

$V_{p} = 100V,I_{p} = 4mA$. The value of plate resistance will be.

• A. 25 kΩ
• B. 20.8 kΩ
• C. 12.5 kΩ
• D. 100 kΩ

Answer 1

Answer: (C)

12.5 kΩ

Answer 2

$r_{p} = \frac{V_{p_{1}} - V_{p_{2}}}{I_{p_{1}} - I_{P_{2}}} = \frac{75 - 100}{(2 - 4) \times 10^{- 3}}$=12.5 × 10³Ω =12.5kΩ.