Download App

Electronics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectronics1 Mark
Question
When a PN junction diode is reverse biased(a) Electrons and holes are attracted towards each other and move towards the depletion region(b) Electrons and holes move away from the junction depletion region(c) Height of the potential barrier decreases(d) No change in the current takes place
 
 
 
 
✓

Answer

(b) Electrons and holes move away from the junction depletion region

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Two straight horizontal parallel wires are carrying the same current in the same direction, d is the distance between the wires. You are provided with a small freely suspended magnetic needle. At which of the following positions will the orientation of the needle be independent of the magnitude of the current in the wires(a) At a distance d/2  from any of the wires(b) At a distance d/2  from any of the wires in the horizontal plane(c) Anywhere on the circumference of a vertical circle of radius d and centre halfway between the wires(d) At points halfway between the wires in the horizontal plane
 
 
 
 
→
Which principle suggests that the intensity of light determines its amplitude?
→
In the given figure the capacitors $C_1, C_3, C_4, C_5$ have a capacitance $4\ mF$ each if the capacitor $C_2$ has a capacitance $10\ mF,$ then effective capacitance between $A$ and $B$ will be
→
A coil with $100$ turns has an inductance of $0.05H$ and $0.02A$ current is passed through it. Flux linked with the coil is
→
An inductor, a resistance and a capacitor are joined in series with an $AC$ source. As the frequency of the source is slightly increased from a very low value, the reactance:
→
Gases begin to conduct electricity at low pressure because(a) At low pressure, gases turn to plasma(b) Colliding electrons can acquire higher kinetic energy due to increased mean free path leading to ionisation of atoms(c) Atoms break up into electrons and protons(d) The electrons in atoms can move freely at low pressure
 
 
 
 
→
When an atomic gas or vapour is excited at low pressure, by passing an electric current through it then?
→
An electric field is applied to a semiconductor. Let the number of charge carriers be $n$ and the average drift speed be $v.$ If the temperature is increased,
→
In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer, having electron density $\ce{10^{11} per m^3}$
→
The current in a coil decreases from 1 A to 0.2 A. In 10sec. Calculate the coefficient of self inductance. If induced emf is 0.4 volt.(a) 5 H(b)  3 H(c)  4 H(d) 2 H
       
→