Class 12 Physics Chapter 14 (Semiconductor Electronics)

Class 12 Physics Chapter 14 (Semiconductor Electronics) ka Part 1. Is video mein hum samjhenge ki conductors, insulators aur semiconductors mein asli farak kya hai — pehle resistivity aur conductivity ke basis pe, aur phir ENERGY BAND THEORY se, jo iska real explanation hai. Boards mein is chapter se 7 marks aate hain, aur ye poora chapter energy band diagram pe khada hai. Isliye is video ko poora dekhna. TIMESTAMPS 00:00 Introduction _:_ Resistivity aur conductivity ke basis pe classification _:_ Semiconductor special kyun hai _:_ Types of semiconductors (elemental aur compound) _:_ Energy band kaise banta hai _:_ Valence band, Conduction band, Forbidden gap _:_ Case 1 - Conductor _:_ Case 2 - Insulator _:_ Case 3 - Semiconductor _:_ Temperature ka effect YAAD RAKHNE WALI BAATEIN Metal ki resistivity 10 se minus 2 se 10 se minus 8 Ohm-metre ke beech hoti hai Semiconductor ki resistivity 10 se minus 5 se 10 ki power 6 Ohm-metre ke beech hoti hai Insulator ki resistivity 10 ki power 11 se 10 ki power 19 Ohm-metre ke beech hoti hai Eg = 0 conductor ke liye, lagbhag 1 eV semiconductor ke liye, aur 3 eV se zyada insulator ke liye Si ka band gap 1.1 eV hai, Ge ka 0.72 eV hai, GaAs ka 1.43 eV hai Semiconductor ka temperature coefficient of resistance NEGATIVE hota hai 0 K par intrinsic semiconductor ek PERFECT INSULATOR hota hai NEXT VIDEO (Part 2): Intrinsic aur Extrinsic Semiconductors - doping, n-type, p-type #Class12Physics #Semiconductor #EnergyBand #CBSE #HBSE #NCERT #Physics