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On applying a potential of – 1 volt at the grid of a triode, the following relation between plate voltage V_(p) (volt) and plate current I_(p) (in mA) is found I_(p) = 0.125 V_(p)-7.5 If on applying – 3 volt potential at grid and 300 V potential at plate, the plate current is found to be 5 mA , then amplification factor of the triode is

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Answer :A


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