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Circuit Diagram

Class 7 Science · Chapter 3: Bijli: Circuit aur Unke Hisse · NCERT Curiosity section 3.3

Seekho

Asli cell, bulb aur taar banaana dheema hai. Iski jagah chinh use karte hain. Cell: lambi line (+) aur chhoti line (−); battery: do ya zyaada cell ek kataar mein; bulb: cross wala gola; taar: seedhi line.

LED: bar wala tikon, aur nikalti roshni ke do chhote teer; tikon current ki disha mein. Switch: do binduon ke beech lever: band (ON) ya tirchha khula (OFF).

Chinhon se bana circuit ka chitra circuit diagram hai. Ye raha torch: ek ghere mein battery, switch aur bulb. Switch ON par bulb jalta hai. Duniya mein koi bhi ise padh sakta hai, kyunki sansthaayein maanak chinhon par sahmat hain.

Diagram padhna galti dhoondhne mein madad karta hai. Bulb na jale to jaancho: kya har switch ON hai? Koi khaali jagah ya dheela taar? LED ulta? Filament toota? Cell khatam? Zoya ek baar mein ek cheez jaanchti hai.

Explore: circuit band karo.

  1. Bulb jalaane ke liye jo zaroori ho wo on karo.

Yaad rakho

  • Circuit diagram maanak chinhon se circuit dikhaata hai.
  • Cell: lambi line +, chhoti −. LED: tikon current ki disha mein.

Quick check

Cell ke chinh mein positive terminal kaunsi line?

  1. lambi line
  2. chhoti line
  3. dono
  4. koi nahi
Answer

lambi line. Lambi line +, chhoti −.

Socho

Switch band karne par bhi bulb nahi jalta. Sambhav kaaran aur jaanch ka tareeka likho.

Ek answer

Khatam cell (doosre circuit mein aazmaao), toota filament (bulb dekho ya badlo), dheele ya bina chhile taar (jod jaancho), battery mein ulta cell, ya kharaab switch (taar se seedha jodkar dekho).

Practice

Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.