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Work, Energy and Power — Study Plan

CBSE · Class 11 · Physics

A step-by-step study plan for Work, Energy and Power, CBSE Class 11 Physics: what to learn first, what to practise and when to revise.

138 questions70 flashcards15 formulas & key relations5 concepts

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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: 1. Scalar Product and the Idea of Work, 2. Work-Energy Theorem, 3. Work Done by Constant Forces.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 138 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to Work, Energy and Power after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Dot product: A · B = AB cos θ
  • Work: W = Fd cos θ
  • Work is scalar and may be positive, negative, or zero
  • Work-energy theorem: change in kinetic energy equals work done by net force
  • For constant force: Kf − Ki = W
  • The theorem follows from Newton’s Second Law
  • K = 1/2 mv2
  • Kinetic energy depends on mass and speed
  • Kinetic energy is scalar

Common Mistakes to Avoid

Work is done whenever a force is applied, even if there is no displacement.

Work done by action-reaction forces must always be equal and opposite.

Positive work means the force must be large, and negative work means the force is bad or incorrect.

Memory Tips

Work and energy have the same dimensions and unit

Power and its unit

No work is done in three special cases

Positive and negative work

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Frequently Asked Questions

What are the important topics in Work, Energy and Power for CBSE Class 11 Physics?
Key topics in Work, Energy and Power include Scalar Product and the Idea of Work, Work-Energy Theorem, Work Done by Constant Forces, Kinetic Energy. Study these first, then practise questions on each for Class 11 exams.
How should I revise Work, Energy and Power for Class 11 exams?
Learn the core ideas first, then work through the 138 practice questions on Work, Energy and Power. Revise definitions regularly and use flashcards for quick recall before the exam.

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

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