The amplification factor of a triode is 50. I | vedclass

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(B) The amplification factor $\mu$ of a triode is defined as the ratio of the change in plate potential to the change in grid potential for a constant

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$10$

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(B) The amplification factor $\mu$ of a triode is defined as the ratio of the change in plate potential to the change in grid potential for a constant plate current,with a negative sign indicating that the potentials must change in opposite directions to maintain the same current.$\mu = - \frac{\Delta V_p}{\Delta V_g}$Given: $\mu = 50$ and $\Delta V_g = -0.20\, V$.To keep the plate current unchanged,we need to find the required increase in plate potential $\Delta V_p$.$\Delta V_p = - \mu 	imes \Delta V_g$$\Delta V_p = -50 	imes (-0.20\, V) = 10\, V$.Therefore,an increase of $10\, V$ in plate potential is required.

The amplification factor of a triode is $50$. If the grid potential is decreased by $0.20\, V$,what increase in plate potential will keep the plate current unchanged?

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