Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
Share

The Plate Current Remains Unchanged If the Plate Voltage is Increased to 250 V and the Grid Voltage is Decreased to −2.5 V. Calculate the Amplification Factor. - Physics

Question

A triode value operates at Vp = 225 V and Vg = −0.5 V.
The plate current remains unchanged if the plate voltage is increased to 250 V and the grid voltage is decreased to −2.5 V. Calculate the amplification factor.

Solution

Amplification factor for a triode valve,

$\mu = \frac{\text{Change in Plate Voltage}}{\text{Change in Grid Voltage}}$

At constant plate current,

$\mu = \left(\frac{\delta V_P}{\delta V_G}\right)_{i_P = constant}$

$\mu = \frac{250 - 225}{2 . 5 - 0 . 5}$

$\mu = \frac{25}{2} = 12 . 5$

This implies that the amplification factor of the triode is 12.5

Is there an error in this question or solution?

APPEARS IN

HC Verma Solution for Class 12 Concepts of Physics Part 2 (2018 (Latest))
Chapter 19: Electric Current through Gases
Q: 13 | Page no. 353
HC Verma Solution for Class 12 Concepts of Physics Part 2 (2018 (Latest))
Chapter 19: Electric Current through Gases
Q: 13 | Page no. 353

Video TutorialsVIEW ALL [2]

Solution The Plate Current Remains Unchanged If the Plate Voltage is Increased to 250 V and the Grid Voltage is Decreased to −2.5 V. Calculate the Amplification Factor. Concept: Semiconductor Diode.
S