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The variation of anode current in a triode corresponding to a change in grid potential at three different values of the plate potential is shown in the diagram. The mutual conductance of the triode is
In a triode amplifier, $\mu=25, r_p=40$ kilo ohm and load resistance $R_L=10$ kilo ohm. If the input signal voltage is $0.5$ volt, then output signal voltage will be
A $G e$ specimen is doped with $A l$. The concentration of acceptor atoms is $\sim 10^{-}$atoms $/ m$. Given that the intrinsic concentration of electron hole pairs is $\sim 10^{19} / m ^3$, the concentration of electrons in the specimen is
The width of forbidden gap in silicon crystal is $1.1\ eV$. When the crystal is converted in to a $N$-type semiconductor the distance of Fermi level from conduction band is