MCQ
The amplification factor of a triode is $20$. If the grid potential is reduced by $0.2\, volt$ then to keep the plate current constant its plate voltage is to be increased by.......$volt$
- A$10$
- ✓$4$
- C$40$
- D$100$
✓
Answer
Correct option: B.
$4$
b
(b)$\mu = - \frac{{\Delta {V_p}}}{{\Delta {V_G}}}$$ \Rightarrow \Delta {V_p} = - \mu \,\Delta {V_G} = - 20 \times ( - 0.2)$$ = 4\,V.$
(b)$\mu = - \frac{{\Delta {V_p}}}{{\Delta {V_G}}}$$ \Rightarrow \Delta {V_p} = - \mu \,\Delta {V_G} = - 20 \times ( - 0.2)$$ = 4\,V.$
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