Question

In P-N junction, avalanche current flows in circuit when biasing is

(a) Forward

(b) Reverse

(c) Zero  

(d) Excess

Answer

(b) Reverse

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

Similar questions

What is the total work done on moving a test charge on an equipotential surface?
A screen is placed a distance 40cm away from an illuminated object. A converging lens is placed between the source and the screen and it is attempted to form the image of the source on the screen. If no position could be found, the focal length of the lens:
  1. Must be less than 10cm.
  2. Must be greater than 20cm.
  3. Must not be greater than 20cm.
  4. Must not be less than 10cm.

When a current is passed through water, acidified with a dilute sulphuric acid, the gases formed at the platinum electrodes are

(a) 1 vol. hydrogen (cathode) and 2 vol. oxygen (anode)

(b) 2 vol. hydrogen (cathode) and 1 vol. oxygen (anode)

(c) 1 vol. hydrogen (cathode) and 1 vol. oxygen (anode)

(d) 1 vol. oxygen (cathode) and 2 vol. hydrogen (anode)

Consider a collision between an oxygen molecule and a hydrogen molecule in a mixture of oxygen and hydrogen kept at room temperature. Which of the following are pcssible?
  1. The kinetic energies of both the molecules increase.
  2. The kinetic energies of both the molecules decrease.
  3. The Kinetic energy of the oxygen molecule increases and that of the hydrogen molecule decreases.
  4. The kinetic energy of the hydrogen molecule increases and that of the oxygen molecule decreases.

Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shown in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v

(a) a 

(b) b 

(c) c  

(d) d

Which of the following is not correct about relative magnetic permeability $(\mu,)$

The diagram shows the path of four a-particles of the same energy being scattered by the nucleus of an atom simultaneously. Which of these are/is not physically possible

(a) 3 and 4

(b) 2 and 3

(c) 1 and 4

(d) 4 only

A photocell stops emission if it is maintained at 2V negative potential. The energy of most energetic photoelectron is

(a) 2eV

(b) 2J

(c) 2kJ

(d) 2keV

What will be the equivalent resistance between the two points A and D

(a) 10 Ω  

(b) 20 Ω

(c) 30 Ω

(d) 40 Ω

Ultraviolet rays coming from sun are absorbed by: