In a triode amplifier, the value of maximum gain is equal to
A
Half the amplification factor
B
Amplification factor
C
Twice the amplification factor
D
Infinity
[MP PMT 1992]
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B
Amplification factor
The maximum voltage gain $(A)_{\sim}=\mu$ (Which is obtained when $R=\infty$ ).
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The amplification factor of a triode valve is $15.$ If the grid voltage is changed by $0.3$ volt the change in plate voltage in order to keep the plate current constant (in volt) is