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Electricity and Magnetism

ICSE · Class 7 · Physics

Quick revision notes for Electricity and Magnetism — ICSE Class 7 Physics. Key concepts, formulas, and definitions for last-minute revision.

99 questions37 flashcards5 concepts

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Key Topics to Revise

1

Magnetism and Magnetic Properties

  • The first magnet was discovered nearly 5000 years ago in Magnesia.
  • The word magnet is derived from the town name Magnesia.
  • A magnet attracts small pieces of iron.
2

Electromagnetism and Electromagnets

  • Hans Christian Oersted discovered in 1819 that there is a magnetic field around every wire carrying an electric current.
  • A current-carrying cylindrical coil behaves like a magnet.
  • A cylindrical coil is called a solenoid.
3

Electric Bell

  • An electric bell is a common application of an electromagnet.
  • The main parts are a horse-shoe electromagnet, a soft iron armature, a hammer, a gong, a metallic springy strip, an adjusting screw, a switch or bell push, and a battery.
  • The armature is fixed to the metallic springy strip.
4

Electric Cells and Batteries

  • A cell is a source of electricity.
  • A cell consists of a vessel with two metal rods called electrodes and a chemical substance called electrolyte.
  • In a simple cell, the copper rod becomes the positive electrode or anode and the zinc rod becomes the negative electrode or cathode.

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Full Notes

Key Concepts

A magnet attracts iron and hasLike poles repel and unlike polesThe space around a bar magnetA magnetic compass is a smallA wire carrying electric current produces

Frequently Asked Questions

What are the important topics in Electricity and Magnetism for ICSE Class 7 Physics?
Electricity and Magnetism covers several key topics that are frequently asked in ICSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Electricity and Magnetism — ICSE Class 7 Physics?
Understand the core concepts first, then work through the 99 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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