CBSE · Class 7 · Science · Chapter 3

Electricity: Circuits and their Components

Explore electric circuits, cells, bulbs, switches, conductors and the conditions needed for current to flow.

6 lessons 40 min
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Lessons in this chapter

  1. 1Electric Cells, Batteries, and the TorchDiscover how a torch uses a portable energy source and why the order of its cells matters.
  2. 2Electric Lamps and LEDsSee how a filament lamp and an LED produce light and identify the connections each one needs.
  3. 3Making a Circuit WorkBuild, predict, and explain complete circuits for filament lamps and LEDs.
  4. 4Switches and Circuit DiagramsControl a circuit with a switch and translate its real connections into clear symbols.
  5. 5Conductors, Insulators, and Electrical SafetyUse a checked tester to compare materials and explain how conducting and insulating parts work together.
  6. 6Chapter Summary and PracticeConnect the whole chapter through a compact recap, circuit challenges, and reasoned investigations.
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