When a triode valve is used as an amplifier the phase difference between input and output voltages is

Question

When a triode valve is used as an amplifier the phase difference between input and output voltages is (A) zero (B) (π/4) (C) (π/2) (D) π

Tardigrade Admin · Accepted Answer

Triode valve consists of a cathode, grid and anode. When current is passed in the filament by connecting it to a battery, the filament is heated and it heats up the cathode, so electrons start emitting from the cathode.
Anode plate is connected to the positive terminal of a battery. Thus, anode is positive with respect to cathode, electrons being negatively charged get attracted towards anode and a continuous plate current flows. when both grid and anode are positive maximum plate current flows.

Q. When a triode valve is used as an amplifier the phase difference between input and output voltages is

zero

$\frac{π}{4}$

$\frac{π}{2}$

$π$

Q. When a triode valve is used as an amplifier the phase difference between input and output voltages is

zero

4π​

2π​

π

$\frac{π}{4}$

$\frac{π}{2}$

$π$