Question

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?

• A. 5V
• B. 10V
• C. 0.2V
• D. 50V

Hint:

The amplification factor of a triode is a measure of how much the plate potential changes in response to a change in the grid potential.

Answer 1

The Correct Option is B

For a triode, the plate current is related to the grid and plate potentials. To keep the plate current constant when the grid potential is decreased, the plate potential must be increased by a corresponding amount. The amplification factor of the triode is 50, which determines how much the plate potential must increase.