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🧾 CBSE · Class 8

Class 8 Science: Electricity Magnetic and Heating Effects Worksheet (with Answers)

A free, print-ready worksheet on Electricity Magnetic and Heating Effects for CBSE Class 8 Science, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

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Sample worksheet

7 of 17 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

  1. 1. An electric current flows only when the circuit is:
    • (a) broken
    • (b) open
    • (c) made of plastic
    • (d) complete
  2. 2. The glowing of a bulb's filament is due to the:
    • (a) magnetic effect
    • (b) chemical effect
    • (c) heating effect
    • (d) Tyndall effect
  3. 3. Which is a conductor of electricity?
    • (a) rubber
    • (b) copper
    • (c) glass
    • (d) dry wood
  4. 4. A device that melts to break a circuit during excess current is a:
    • (a) fuse
    • (b) switch
    • (c) cell
    • (d) bulb
  5. 5. What is the heating effect of electric current?
  6. 6. How does a fuse protect a circuit?
  7. 7. Explain the heating effect of electric current and give three uses.
View answers
  1. 1. (d) complete — Current flows only in a closed (complete) circuit.
  2. 2. (c) heating effect — The filament glows because of the heating effect of current.
  3. 3. (b) copper — Copper, a metal, conducts electricity.
  4. 4. (a) fuse — A fuse melts and breaks the circuit for safety.
  5. 5. The production of heat when current passes through a wire, used in heaters, irons and bulb filaments.
  6. 6. Its thin wire melts when the current is too high, breaking the circuit before damage occurs.
  7. 7. When current flows through a wire, the wire's resistance converts electrical energy into heat, so it warms up — the heating effect. The heat is greater for higher current, higher resistance (thin wire) and longer time. Uses include electric heaters and irons (high-resistance heating elements), incandescent bulbs (a thin filament glows white-hot), and electric fuses (a thin wire melts to break a dangerously high current).
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How it works

Every question is drawn from StudyMatic’s own Science bank for Electricity Magnetic and Heating Effects — nothing is auto-generated or invented. Pick how many of each type you want, add your own questions if you like, choose 1–4 paper sets for anti-cheating, and print the worksheet and answer key separately or save them as PDF.

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FAQ

Is this Class 8 Science worksheet on Electricity Magnetic and Heating Effects free?
Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.
Does the Electricity Magnetic and Heating Effects worksheet come with answers?
Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?
Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?
This worksheet is aligned to CBSE Class 8 Science, chapter “Electricity Magnetic and Heating Effects”.