Download App

Electronics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectronics1 Mark
MCQ
The amplification factor of a triode is 20. If the grid potential is reduced by 0.2 volt then to keep the plate current constant its plate voltage is to be increased by
  • A
     10 volt
  • ✓
     4 volt
  • C
     40 volt
  • D
     100 volt
✓

Answer

Correct option: B.
 4 volt
4 volt

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Electronics→Electronics — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Unit of radioactivity is Rutherford. Its value is
→
$\mathrm{CO}_2$ gas is found in which of the following pairs of the planet 
→
The magnetic induction in the region between the pole faces of an electromagnet is $0.7$ $weber/m$$^2$. The induced $e.m.f$. in a straight conductor $10$ $cm$ long, perpendicular to $B$ and moving perpendicular both to magnetic induction and its own length with a velocity $2$ $m/sec$ is.......$V$
→
$CO_2$ gas is found in which of the following pairs of the planet
→
Polarising angle for water is $53^o 4'$. If light is incident at this angle on the surface of water and reflected, the angle of refraction is
→
The wavelength of light emitted from second orbit to first orbits in a hydrogen atom is

 
→
When you walk through a metal detector carrying a metal object in your pocket, it raises an alarm. This phenomenon works on
→
The splitting of white light into several colours on passing through a glass prism is due to
→
The distance travelled by light in glass (refractive index $=1.5$) in a nanosecond will be.......$cm$
→
The acceleration of an electron in an electric field of magnitude 50 V/cm, if e/m value of the electron is $1.76\times 10^{11}$ C/kg, is
→