1.7.4

Power

Cambridge IGCSE Physics (0625)  · Unit 1: Motion, forces and energy  · 2 flashcards

Power is topic 1.7.4 in the Cambridge IGCSE Physics (0625) syllabus , positioned in Unit 1 — Motion, forces and energy , alongside Physical quantities and measurement techniques, Motion and Mass and weight.

This topic is examined in Paper 1 (multiple-choice) and Papers 3/4 (theory), plus Paper 5 or Paper 6 (practical / alternative to practical).

The deck below contains 2 flashcards — covering the precise wording mark schemes reward.

What the Cambridge 0625 syllabus says

2026-2028 syllabus, in our words

What the syllabus expects you to be able to do in this topic, in plain English. Match the command word (Describe, Explain, State, etc.) in your answer to score full marks. For the exact wording, see the official syllabus (PDF).

  1. Define Define power as the work done in each unit of time, and also as the energy transferred in each unit of time; recall and use the equations P = W/t and P = ΔE/t.
Key Concept Flip

An electric motor lifts a 2.0 kg mass vertically by 0.50 m in 1.0 s at a constant speed. Calculate the power output of the motor.

Answer Flip

Power = Work Done / Time
Work Done = Force x Distance = Weight x Distance
Weight = mass x g = 2.0 kg x 9.8 N/kg = 19.6 N
Work Done = 19.6 N x 0.50 m = 9.8 J
Power = 9.8 J / 1.0 s = 9.8 W

Therefore, the power output of the motor is 9.8 Watts. Power is the rate at which work is done.

Key Concept Flip

A light bulb is rated at 60 W. State what this means in terms of energy transfer.

Answer Flip

A 60W light bulb transfers 60 Joules of electrical energy to light and heat energy every second. Power is the rate of energy transfer, so a higher wattage means more energy is transferred per second.

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1.7.3 Energy resources 1.8 Pressure

More topics in Unit 1 — Motion, forces and energy

Power sits alongside these Physics decks in the same syllabus unit. Each uses the same spaced-repetition system, so progress in one informs the next.

1.1 Physical quantities and measurement techniques

14 flashcards
1.2 Motion

26 flashcards
1.3 Mass and weight

10 flashcards
1.4 Density

8 flashcards
1.5.1 Effects of forces

24 flashcards
1.5.2 Turning effect of forces

12 flashcards
1.5.3 Centre of gravity

6 flashcards
1.6 Momentum

8 flashcards
1.7.1 Energy

12 flashcards
1.7.2 Work

4 flashcards
1.7.3 Energy resources

14 flashcards
1.8 Pressure

8 flashcards

Related Physics guides

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IGCSE Physics MCQ mistakes

Single-letter mistakes most often costing marks in Paper 1/2

IGCSE Physics high-yield questions

Equations and reasoning chains that come up every series

IGCSE Physics 2-week revision plan

Daily breakdown for the fortnight before exams

How to study this Power deck

Start in Study Mode, attempt each card before flipping, then rate Hard, Okay or Easy. Cards you rate Hard come back within a day; cards you rate Easy push out to weeks. Your progress is saved in your browser, so come back daily for 5–10 minute reviews until every card reads Mastered.