Work, Energy and power
ICSE · Class 10 · Physics
Flashcards for Work, Energy and power — ICSE Class 10 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.
What is work? When is work said to be done?
Answer
Work is said to be done when a force is applied on a body and the body is displaced from its initial position. Work is done only when there is displacement under the influence of applied force. If the
Write the formula for work done and explain each term.
Answer
Work done = Force × Displacement W = F · s Where: - W = Work done (measured in joules) - F = Applied force (measured in newtons) - s = Displacement in the direction of force (measured in meters) Whe
What are the three special cases of work done based on the angle between force and displacement?
Answer
1. When θ = 0° (force parallel to displacement): W = F × s × cos 0° = F × s (Maximum positive work) Example: Gravitational force on freely falling body 2. When θ = 90° (force perpendicular to d
What are the units of work? Give the relationship between them.
Answer
S.I. Unit: Joule (J) - 1 joule = work done by 1 newton force displacing a body by 1 meter C.G.S. Unit: Erg - 1 erg = work done by 1 dyne force displacing a body by 1 centimeter Relationship: 1 J = 1
Define power. What factors does power depend on?
Answer
Power is the rate of doing work. P = Work done (W) / Time taken (t) P = W/t Power depends on two factors: 1. The amount of work done by the source 2. Time taken by the source to do the work Smaller
Derive the expression P = F × v for power.
Answer
Starting with: P = W/t If constant force F displaces a body by distance s in time t: Work done, W = F × s Therefore: P = (F × s)/t P = F × (s/t) Since velocity v = s/t P = F × v This shows that Po
What are the units of power? Define horse power.
Answer
S.I. Unit: Watt (W) - 1 watt = 1 joule/second - When 1 joule work is done in 1 second, power is 1 watt Other units: - 1 kilowatt (kW) = 10³ watt - 1 megawatt (MW) = 10⁶ watt Horse Power (H.P.): - Wo
What is energy? How is it related to work?
Answer
Energy is the capacity of a body to do work. Relation with work: - When work is done ON a body → gain in energy - When work is done BY a body → loss in energy - Work done = Change in energy This is
+16 more flashcards available
Practice AllGet detailed flashcards for Work, Energy and power
Super Tutor gives you interactive content for every chapter of ICSE Class 10 Physics — summaries, quizzes, flashcards, and more.
Try Super Tutor — It's FreeFrequently Asked Questions
What are the important topics in Work, Energy and power for ICSE Class 10 Physics?
Work, Energy and power covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Work, Energy and power — ICSE Class 10 Physics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
How many flashcards are available for Work, Energy and power?
There are 24 flashcards for Work, Energy and power covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More Resources for Work, Energy and power
Important Questions
Practice with board exam-style questions
Syllabus
What topics to cover
Revision Notes
Key points for last-minute revision
Study Plan
Step-by-step plan to ace this chapter
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Practice Quiz
Test yourself with a quick quiz
Concept Maps
See how topics connect visually