Resistivity is the intrinsic property, it doesn't depend upon length and shape of the semiconductors.
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The slope of plate characteristic of a vacuum tube diode for certain operating point on the curve is $10^{-3} \frac{ mA }{ V }.$ The plate resistance of the diode and its nature respectively
A diode having potential difference $0.5 V$ across its junction which does not depend on current, is connected in series with resistance of $20 \Omega$ across source. If $0.1 A$ passes through resistance then what is the voltage of the source
In the figure four plate characteristics of a triode at different grid voltage are shown. The difference between successive grid voltage is $1\ V.$ Which curve will have maximum grid voltage and what is its value?
For a triode $r_p=10 \ kilo \ ohm$ and $g_m=3 \ milli \ mho$. If the load resistance is double of plate resistance, then the value of voltage gain will be