Spark your curuosity in Electronics - Black keyhole

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Spark your curuosity in Electronics

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Today we will be going to take look about random questions get in into my mind related to Electronics. So search about those things in Internet and get the Answer for those some random curiosity questions sparked into my mind. let's dive into that

Q1. What is Electronics

         The branch of Engineering which deals with current conduction through a vacuum or Gas or semiconductor is known as electronics.

Q2. How the name electronics derives?

        the name derives from electron present in all materials.

Q3 What is photo-electricity?

         The conversion of light into electricity is known as photo-electricity. such as Burglar alarms, sound recording on motion pictures etc.

Q4 What is atoms?

       The materials are composed of very small particles is called atoms

Q5 proton is positively charged why the proton is positively charged? why can not be negatively charged? 

       A proton has a positive one charge of 1, which is equal to electron but  opposite to the charge of an Electron.  The charge is believed to be from the charge of the quarks that make up the nucleons (protons and neutrons). A proton is made of two Up quarks, with 2/3 positive charge each and one Down Quark with a negative 1/3 charge (2/3 + 2/3 + -1/3 = 1).

Q5 why Neutron is considered as no overall charge?

          A neutron is made up of two Down quarks with a negative 1/3 charge each and one Up quark with a positive 2/3 charge. (-1/3 + -1/3 + 2/3 = 0).

Q6. why is the number of electrons equal to the no of protons?

             In order to atom remains electrically neutral the protons and electrons must balance each other.

Q7. why are there neutrons in the nucleus?

   Neutrons are required for the stability of the nuclei. So that it is strongly attracted to the protons with the strong force and does not interact with the charge of the proton. This will repeal each other and are not electrically attracted. The strong force is know as  strong interaction, color force, or strong nuclear force. and thus makes stable for the nucleus.


Q8. what are nuclear fission and fusion?

      Both fission and fusion are nuclear reactions that produce energy. fission is the splitting of a heavy unstable nucleus into two lighter nuclei. fusion is the process where combine two light nuclie together releasing a vast amount of energy.

Q9 what is Nucleosynthesis?

       Nucleosynthesis is a process that creates new atomic nuclei from pre-existing nucleons and nuclei.  


Q10. why atoms are neutral?

               when atom has equal number of electrons and protons, it has equal amount of positive and negative charges. the total amount of electric charge in the atom is Zero. so that it why we call atoms is neutral because I does not have overall charge.

*Q11.  How do we identify electron charge, mass, radius exactly?

              Electron's basic unit of electric charge is 1.602176634 × 10−19. The rest mass of an electron is 9.1093837015 × 10−31 kg . the charge to mass ratio of the electron is given by : e/m= 1.758820 × 1011 C/kg .

*Q12.  Electron is negatively charged. Therefore electrons are getting attacked to the positive terminal of a power supply  that means from the negative terminal to positive terminal? then why we say that current position is positive to negative? 

    current position will flow in the opposite direction of the electron. that's why we call current flow from positive to negative terminal.

Q13. what is valence electronce?

          The electrons in the outermost orbit of an atom are known as valence electrons.

Q14. why the valence electrons are important? how do we say that valence electrons determine that importance?

       They are important because they determine how an atom will react. by writing an electron configuration. you will be able to see how many electrons occupy the highest energy level. So the number of valences electron atom holds becomes more stable. Also, the valence electron holds number in the outer shell will determine how an atoms interact with another. So valence electrons provides variety of function to atoms create concreate foundation to make chemical bonds.  

Q15. How we can determine the behaviour of material from the number of valence electron ?

       1. when the number of valence electron in the atom is less than 4(half of the maximum eight electron) are usually a metal and a conductor. Example sodium , magnesium and aluminium.

      2. when the number of valence electron more than 4 , that material is usually  an Insulatter and non- metal

  3. when the number of valence elctron of  an atom is  4,  the material is usually a semi-conductor. 

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Q16.  Can Electron be positively charged and proton be negatively charged?

             Electric current is not just a moving electric charge. Electric current is the net  movement of electric charges and the movement of electric field disturbances connected to the charges. That is why electrical signals in a wire, such as telephone calls, travel on the order of the speed of light while the electrons themselves travel much slower. If electric currents were nothing more than moving electrons, then it would take 6 months for your voice on the telephone call to reach the other side of town. electric charge carriers aren't always electrons and they aren't always negative. In fact, in the natural world, the charge carriers are usually not just electrons. In animals, the electric charge carriers are primarily sodium, potassium, calcium, and magnesium ions, all positively charged. They are the things that are moving when a nerve passes an electric signal. Renaming electrons as positively charged would require renaming almost all the other charge carriers as negatively charged. Being a positive or negative charge, is a matter of convention


Q17.  Electron is negatively charged? how can we determine electron is negatively charged?


           electrons can move from atom to atom. If an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged.  

Q18. how DC battery stores 

        There is no any battery stores electrical energy. all batteries stores energy in other ways. the space between electrodes fill with electrolytic an ionic liquid which contains electricity. one electrode the anode permits the elctrone to flow out of it and other cathode receive it 

  for more info check here


Q22. The difference of  BJT transistor and FET transistor ?


  •     In this type of Transistor the operation is depend on both the charge carrier (electrone and holes)
  •  This device is know for current control 

  •   offset voltage is required 

  •   consumption of power is more 

  •            The gain is more in this type of transistor
  •  The output value of impedence becomes high because of its gain value is high 

  •  The requirement of low currents make this transistor in use


  • In FET the operation performed is due to the majority of carriers it may be either elctrons or holes.
  • This device is known for voltage control
  • There is no requirement of offset voltage
  • consumption of power is less
  • These transistors gain will be less
  •  Due to the lesser voltage impedance it produces lesser voltage gain
  • low voltage requirement utilize FET             


Q 23. why we use power gain? 

        In electronics, gain is a measure of the ability of a two-port circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output port by adding energy converted from some power supply to the signal

Until Now, I have taken 23 questions only. In the future, I will update more. If you know any more questions with answer let me know in the comment box. 

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