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# 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 r_{p}=10 KΩ = 10^{4}Ω, V_{P1}=200V, V_{P2}=220 V

The dynamic resistance of triode is defined as,

where ΔV_{p} is the change in plate voltage and V_{g} is the grid voltage and ΔI_{p} is the change in plate current

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