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Semiconductor 1 Introduction
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The following topics are covered in this video-1- introduction of electronic and electronic devices 2- Classification of solids on the basis of their electrical properties 3-Classification of semiconductors

Sanjeev Bhargava
M.Sc.(Physics)B.Ed. Owner of two coaching classes(For IIT-JEE & NEET) in Bhopal and Hoshangabad (M.P.), 25 years of Teaching experience.

Unacademy user
mam I have registered for the special session...but i have a doubt.... is it necessary to attend the special session at 3PM...cann't I attend it later?
Taruna Sharma
a year ago
No you have to attend it 3 pm only. It is one time sesssion of 90 minutes
Anil Dudani
a year ago
ok mam...thank u
Taruna Sharma
a year ago
Special Live Session on Freedom Movement in Rajasthan will be conducted on Sunday 1st July'18 You can register for this on Saturday on Unacademy site b/w 12-1:30pm. Plz be attentive in enrolling bcz lines will open only for 90 min. Plz share it with your friends as much as u can..
easy explanation, easy language. highly recommended for basic concepts to higher level for IIT JEE students and for similar examinations
Sanjeev Bhargava
5 months ago
Subhash always be happy
Sanjeev Bhargava
5 months ago
Sanjeev Bhargava
5 months ago
  1. Physics of class-12 The following topics are Covered in this video Electronics " Semiconductors 1-Introduction of electronic & electronic devices the basis of their electrical Properties semiconductors 2-classification of solids on Unacademy 3-classification of Board & Competition

  2. ELECTRONIC DEVICES Solid-state electronic devices Semiconductors

  3. Electronics Here the electric current will go In Conductor, Semiconductor Insulator Here the e.current will Here the e.current either Here the e.current will Come out or not Come out not come out

  4. Conductivity Semiconduct. 10 s -g Resistivi

  5. Classification of semiconductors on the basis of their chemical composition 1- Elemental semiconductors:- 2- Compound semiconductors Si and Ge (i)-Inorganic:- CdS, GaAs, CdSe, InP etc. (ii)- Organic polymers Polypyrrole, polyaniline Polythiophene, etc. Classification of semiconductors on the basis of the source and the nature Of the charge carriers. Intrinsic semiconductors (Pure) Extrinsic semiconductors (Impure)

  6. Intrinsic semiconductors The pure semiconductors are called intrinsic semiconductors. Their conductivity is due to their own charge carriers. The well known semiconductors are germanium and silicon. They are tetravalent hole (+ve) @ si Si Si Si After heating some covalent bonds break due to thermal agitation and thus some e's get free for conduction At NTP there is no free charge carrier for conduction