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How is an electromagnet… (Class 10 Science 2026, Q33B)

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ScienceCBSE Class 10 · Board exam 2026, set 31/4/1 · 2 marks · Very short answer

CBSE Class 10 Science 2026: question 33(B)

Set in the CBSE Class 10 board exam of 2026, paper 31/4/1, section C, question 33(B), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q33(B) · 2 marks · Very short answerMagnetic Effects of Electric Current

How is an electromagnet made? Write any two ways by which the strength of electromagnet can be increased.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/4/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

What material is placed inside the solenoid?

Hint 2

Think about which two quantities increase the magnetic field of a solenoid.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. An electromagnet is made by winding many turns of insulated copper wire as a coil (solenoid) around a soft iron core and passing an electric current through it. The soft iron becomes a strong magnet while current flows.

    1 mark

  2. The strength can be increased by:
    (i) increasing the number of turns in the coil;

    ½ mark

  3. (ii) increasing the current flowing through the coil.

    ½ mark

Answer: A current-carrying insulated copper coil is wound on a soft iron core. Strength increases with more turns and with more current.

Where the marks are

  • Describes making an electromagnet with a coil on a soft iron core carrying current (1 mark)
  • Gives increasing the number of turns (½ mark)
  • Gives increasing the current (½ mark)

Revise the chapter

Practise this chapterBoard-style questions from Magnetic Effects of Electric Current, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 31/4/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.