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HomeCXC CSEC PhysicsElectromotive Force and Internal Resistance
CXC · CSEC · Physics

Electromotive Force and Internal Resistance
Practice Questions

20 CXC CSEC Physics questions on Electromotive Force and Internal Resistance, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Electromotive Force and Internal Resistance.

Try 2 sample questions on Electromotive Force and Internal Resistance

Question 1 · 1 mark · Difficulty 1/3

The electromotive force (EMF) of a cell is best defined as the

  1. A. voltage across the cell when current flows through it
  2. B. energy per unit charge supplied by the cell to the circuit
  3. C. resistance offered by the cell to the flow of current
  4. D. power dissipated inside the cell per unit time
Show answer & explanation
✓ Answer: BB. energy per unit charge supplied by the cell to the circuit
EMF is defined as the energy converted from chemical (or other) form to electrical form per unit charge, measured in volts. It is NOT the terminal voltage, which is reduced by the internal resistance drop. Options A, C, and D describe related but distinct quantities.
Question 2 · 1 mark · Difficulty 2/3

A battery has an EMF of 9 V and an internal resistance of 1 Ω. When connected to an external resistance of 8 Ω, what is the terminal voltage of the battery?

  1. A. 9.0 V
  2. B. 8.0 V
  3. C. 1.0 V
  4. D. 7.2 V
Show answer & explanation
✓ Answer: BB. 8.0 V
Total resistance = 8 + 1 = 9 Ω. Current I = EMF / total resistance = 9/9 = 1 A. Terminal voltage = EMF − Ir = 9 − (1×1) = 8 V. Option A ignores internal resistance; option C is just the lost volts; option D uses incorrect calculations.
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20 questions · 25 min · free

CXC CSEC Physics: Electromotive Force and Internal Resistance FAQ

How many CXC CSEC Physics questions on Electromotive Force and Internal Resistance are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Electromotive Force and Internal Resistance for CXC CSEC 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 CXC 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 CXC CSEC 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 Electromotive Force and Internal Resistance practice with other Physics topics or even switch to a totally different CXC 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 Electromotive Force and Internal Resistance questions aligned to the official CXC CSEC Physics syllabus?
Every question is written against the published CXC CSEC Physics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC 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 CXC.
How is Electromotive Force and Internal Resistance typically tested on CXC CSEC Physics papers?
Electromotive Force and Internal Resistance appears across multiple question types on real CXC CSEC 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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