The point representing the cut off grid voltage on the mutual characteristic of triode is
A$S$
B$R$
C$O$
D$P$
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D$P$
The cut off grid voltage is that negative grid bias corresponding to which the plate current becomes zero. At point $P, i=0$
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The amplification factor of a triode is $50.$ If the grid potential is decreased by $0.20\ V$, what increase in plate potential will keep the plate current unchanged
A source voltage of $8 V$ drives the diode in fig. through a currentlimiting resistor of $100 ohm$. Then the magnitude of the slope load line on the $V-I$ characteristics of the diode is