The number of free electrons is more than that in a conductor
CThere are no free electrons at o $K$
D
None of these
[AIEEE 2002; AllMS 2002]
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CThere are no free electrons at o $K$
There are no free electrons at o $K$
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With a change of load resistance of a triode, used as an amplifier, from $50$ kilo ohms to $100$ kilo ohms, its voltage amplification changes from $25$ to $30.$ Plate resistance of the triode is