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HomeCIE IGCSE PhysicsThe d.c. electric motor
CIE · IGCSE · Physics

The d.c. electric motor
Practice Questions

20 CIE IGCSE Physics questions on The d.c. electric motor, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on The d.c. electric motor

Question 1 · 1 mark · Difficulty 1/3

A simple d.c. motor consists of a rectangular coil mounted on an axle between the poles of a permanent magnet. Which component reverses the direction of current in the coil every half turn?

  1. slip rings
  2. split-ring commutator
  3. carbon brushes
  4. armature
Show answer & explanation
✓ Answer: Bsplit-ring commutator
Award 1 mark for identifying the split-ring commutator as the component that reverses current direction every half rotation. A is incorrect — slip rings are used in a.c. generators, not d.c. motors. C is incorrect — carbon brushes maintain electrical contact but do not reverse current. D is incorrect — the armature is the rotating coil itself.
Question 2 · 1 mark · Difficulty 2/3

A student builds a d.c. motor using a coil with 50 turns placed in a magnetic field of flux density 0.04 T. The coil carries a current of 2.0 A and each side of the coil has a length of 0.05 m in the magnetic field. What is the force on one side of the coil?

  1. 0.004 N
  2. 0.20 N
  3. 4.0 N
  4. 200 N
Show answer & explanation
✓ Answer: B0.20 N
20 N). Award 1 mark for correct calculation: F = BIL × n = 0.04 × 2.0 × 0.05 × 50 = 0.20 N. A is incorrect — this omits the number of turns. C is incorrect — this uses incorrect multiplication. D is incorrect — this involves a calculation error with powers of ten.
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CIE IGCSE Physics: The d.c. electric motor FAQ

How many CIE IGCSE Physics questions on The d.c. electric motor are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on The d.c. electric motor for CIE IGCSE Physics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Physics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix The d.c. electric motor practice with other Physics topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the The d.c. electric motor questions aligned to the official CIE IGCSE Physics syllabus?
Every question is written against the published CIE IGCSE Physics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is The d.c. electric motor typically tested on CIE IGCSE Physics papers?
The d.c. electric motor appears across multiple question types on real CIE IGCSE Physics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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