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NCERT Solutions for Curiosity Chapter 3 Electricity: Circuits and their Components

Updated on 2026-09-05

About this chapter

An electric cell is a portable source of electrical energy. Its metal cap is the positive (+) terminal and its flat metal disc is the negative (–) terminal. Two or more cells joined so that the + terminal of one touches the – terminal of the next make a battery. A battery gives energy for a longer time and/or more energy. An incandescent lamp glows because current heats its thin filament. An LED has no filament, and current can pass through it in one direction only — its longer wire is the + terminal. A lamp glows only when the circuit is complete, that is, when one terminal of the lamp is joined to one terminal of the cell and the other to the other terminal. The direction of current is taken from + to – of the cell. A switch simply completes (ON, closed circuit) or breaks (OFF, open circ

  • Chapter opener and Section 3.1 A Torchlight
  • A Torchlight
  • Electric cell
  • Battery
  • Electric lamp
  • An electrical circuit
  • Electric switch
  • Circuit Diagrams
  • Electrical Conductors and Insulators
  • –39End-of-chapter questions
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Exercises

  1. Chapter opener and Section 3.1 A Torchlight — In-text Questions Page 24
  2. Activity 3.1: Let us explore — A Torchlight Page 24
  3. Activity 3.2: Let us observe — Electric cell Page 25
  4. In-text Questions — Battery Page 25
  5. Activity 3.3: Let us experiment — Battery Page 25
  6. Activity 3.4: Let us observe — Electric lamp Page 26
  7. Activity 3.5: Let us observe — Electric lamp Page 27
  8. Activity 3.6: Let us construct — Making an electric lamp glow using an electric cell or battery Page 28
  9. In-text Questions — An electrical circuit Page 30
  10. Activity 3.7: Let us experiment — An electrical circuit Page 31
  11. Dive Deeper — An electrical circuit Page 31
  12. In-text Questions — Electric switch Page 32
  13. Activity 3.9: Let us test — Electric switch Page 32
  14. In-text Questions — Circuit Diagrams Page 33
  15. Activity 3.10: Let us draw — Circuit Diagrams Page 34
  16. In-text Questions — Electrical Conductors and Insulators Page 34
  17. In-text Questions — Electrical Conductors and Insulators Page 35
  18. Activity 3.11: Let us identify — Electrical Conductors and Insulators Page 35
  19. In-text Questions — Electrical Conductors and Insulators Page 36
  20. –39End-of-chapter questions — Let Us Enhance Our Learning Page 37
  21. –40Interdisciplinary — Exploratory Projects Page 39
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