In triode valve, for a grid voltage `V_(g) = -1.2 V`, the plate current `I_(p)` (in mA) ad the plate voltage are given by the relation `I_(p) = -50 +0
In triode valve, for a grid voltage `V_(g) = -1.2 V`, the plate current `I_(p)` (in mA) ad the plate voltage are given by the relation `I_(p) = -50 +0.1 V_(p)`, when the grid voltage is changed to `-3.2 V` and the plate voltage is kept at 150 V, plate current of 5 mA is observed. Calculate the valve constant and the voltage amplification for `20 k Omega` load in the plate circuit.
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