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Question: The amplification factor of a triode valve is 15. If the grid voltage is changed by 0.3 volt the cha...

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

A

0.02

B

0.002

C

4.5

D

5.0

Answer

4.5

Explanation

Solution

μ=ΔVpΔVgΔVp=μΔVg\mu = \frac{\Delta V_{p}}{\Delta V_{g}} \Rightarrow \Delta V_{p} = \mu\Delta V_{g} =15 × 0.3 = 4.5 volt.