Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectric Current through Gases

Determine the amplification factor of a triode valve that has a plate resistance of 2 k and a transconductance of 2 millimho .

Options

A4
B4000
C1
D0.25

Correct answer

A. 4

Step-by-step solution

The amplification factor of a triode valve is related to its plate resistance r_p and transconductance g_m by the relation: = r_p g_m Given: r_p = 2 k = 2 10^3 g_m = 2 millimho = 2 10⁻³ ⁻¹ Substituting the values into the formula: = (2 10^3) (2 10⁻³) = 4

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