Download App

14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
For a given plate-voltage, the plate current in a triode is maximum when the potential of
  • A
    The grid is positive and plate is negative
  • ✓
    The grid is positive and plate is positive
  • C
    The grid is zero and plate is positive
  • D
    The grid is negative and plate is positive
✓

Answer

Correct option: B.
The grid is positive and plate is positive
b
(b)When grid is given positive potential more electrons will cross the grid to reach the positive plate $P. $ Hence current increases.

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 14. Semicondutor electronics→14. Semicondutor electronics — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The modulation frequency of an $AM$ radio station is $250\, kHz$, which is $10\%$ of the carrier wave. If another $AM$ station approaches you for license what broadcast frequency will you allot?........$kHz$
→
A uniform wire of 16 Ω is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance 16 Ω. The effective resistance between the other two opposite corners is
→
Vertical component of earth's magnetic field is zero:
→
The electron emitted in beta radiation originates from:
→
In a transformer, the number of turns in primary and secondary are $500$ and $2000$ respectively. If current in primary is $48\,A$ , the current in the secondary is......$A$
→
Two radioactive materials $\mathrm{X}_1$ and $\mathrm{X}_2$ have decay constants 10λ and λ respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of $\mathrm{X}_1$ to that of $\mathrm{X}_2$ will be 1/e after a time
→
Which of the following is a correct statement
→
In which of the following is the interference due to the division of wave front
→
Resistance of rod is calculated by measuring its length with help of meter scale of least count $1\ mm$ . Its radius is measured with help of screw gauge having $50$ division on circular scale and pitch is of $1\ mm$ . Resistivity of material is exact. Length of the wire is found to be $20\ cm$ and diameter of wire is $4\ mm$ . Find the percentage error in calculation of resistance ............... $\%$
→
To demonstrate the phenomenon of interference, we require two sources which emit radiation
→