Q. 155.0( 1 Vote )

The dynamic plate resistance of a triode valve is 10 kΩ. Find the change in the plate current if the plate voltage is changed from 200 V to 220 V.

Answer :

Given rp=10 KΩ = 104Ω, VP1=200V, VP2=220 V

The dynamic resistance of triode is defined as,



where ΔVp is the change in plate voltage and Vg is the grid voltage and ΔIp is the change in plate current



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