Chapter 3: Bijli: Circuit aur Unke Hisse
Hum bijli har jagah use karte hain. Is chapter mein torch kholkar cell, battery, bulb aur LED se milenge, poore circuit aur apna switch banaayenge, maanak chinhon se circuit banaayenge, aur jaanchenge kaunse padaarth current jaane dete hain, hamesha surakshit rehkar.
Is chapter mein tum
- torch ke hisse aur cell ke terminal pehchaanna
- bulb, LED aur switch se circuit banaana
- circuit diagram banaana aur padhna
- conductor aur insulator alag karna aur surakshit upyog
Topics
- Torch: Cell aur Battery NCERT 3.1–3.2.2
Cell ka + terminal (dhakkan) aur − terminal (disc); ye portable urja srot hai.
- Bulb, Circuit aur Switch NCERT 3.2.3–3.2.6
Bulb sirf poore circuit mein jalta hai; current + se − behta hai.
- Circuit Diagram NCERT 3.3
Circuit diagram maanak chinhon se circuit dikhaata hai.
- Bijli ke Conductor aur Insulator NCERT 3.4
Conductor (dhaatu) current jaane dete; insulator (plastic, rubber, lakdi, kaanch) nahi.
Key words
- Electric cell
- + aur − terminal wala bijli urja ka portable srot
- Battery
- do ya zyaada cell + se − jude
- Filament
- incandescent bulb ka chamakne wala patla taar
- LED
- bina filament ka bulb jo current ek hi taraf jaane deta
- Circuit
- current ka poora raasta
- Switch
- circuit kholne ya band karne wala upkaran
- Conductor / insulator
- current aasaani se jaane dene wala / na dene wala padaarth
Summary
- Cell ke + aur − terminal; + se − jude cells battery banaate hain.
- Bulb sirf poore circuit mein jalta; LED ek hi taraf; switch circuit kholta-band karta.
- Circuit diagram maanak chinh use karte hain.
- Dhaatu bijli chalaati; plastic, rubber, lakdi aur kaanch insulator.