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Concept Maps

Work, Energy and Power — Concept Maps

NIOS · Class 12 · Physics

4 concept maps of Work, Energy and Power for NIOS Class 12 Physics, each also written out as a text outline. Part of the NIOS Class 12 Physics syllabus.

45 questions39 flashcards23 formulas & key relations5 concepts

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An illustration showing a block being pulled by a constant force F at an angle theta to the horizontal displacement S, with the formula W = F ⋅ S = FS cosθ.
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One of 3 illustrations for Work, Energy and Power in Super Tutor — alongside flashcards, concept maps and practice questions.

4 Concept Maps

Work, Energy and Power – Complete Chapter Overview

Work, Energy and Power – Complete Chapter Overview

The map in words

  • Work Energy Power
    • Work
      • Formula W equals Fd cosθ
      • Units Joule J
      • Dimension ML2T-2
      • Positive Work θ less 90
      • Negative Work θ more 90
      • Zero Work θ equals 90
      • By Gravity W equals mgh
      • Variable Force
        • Area under F-x graph
        • Spring W equals half kx squared
    • Energy
      • Kinetic Energy
        • KE equals half mv squared
        • Always positive scalar
        • KE equals p squared over 2m
      • Potential Energy
        • Gravitational PE equals mgh
        • Elastic PE equals half kx squared
        • Reference level arbitrary
      • Conservation of Energy
        • KE plus PE equals constant
        • With friction ME decreases
        • Total energy always conserved
      • Work Energy Theorem
        • Wnet equals delta KE
    • Power
      • P equals W over t
      • P equals Fv
      • Units Watt W
      • Dimension ML2T-3
      • 1 hp equals 746 W
      • 1 kWh equals 3.6 MJ
    • Forces
      • Conservative
        • Gravity
        • Spring force
        • Path independent
      • Non Conservative
        • Friction
        • Air resistance
        • Path dependent
    • Collisions
      • Elastic
        • KE conserved
        • Momentum conserved
        • Equal mass exchange velocities
      • Inelastic
        • KE not conserved
        • Momentum conserved
        • Bodies stick together

Perfect Format for Physics Numerical Problems

Perfect Format for Physics Numerical Problems

The map in words

  • Read the Question
    • GIVEN\nList all data with units
      • FIND\nIdentify what is asked
        • FORMULA\nWrite correct formula
          • Unit Conversion\neg km/h to m/s or g to kg
            • SUBSTITUTION\nPut values with units
              • CALCULATION\nShow every step
                • ANSWER\nState result with proper unit
                  • VERIFY\nCheck using alternate method or conservation law

Work, Energy and Power — Complete Concept Map

Work, Energy and Power — Complete Concept Map

The map in words

  • Work Energy Power
    • Work
      • W = Fd cosθ
      • Positive Work
        • θ between 0 and 90
      • Negative Work
        • θ between 90 and 270
      • Zero Work
        • θ = 90 degrees
      • Variable Force
        • Area under F-x graph
      • Spring Work
        • Half kx squared
    • Power
      • P = W divided by t
      • P = Fv
      • SI Unit Watt
      • 1 hp = 746 W
      • 1 kWh = 3.6 MJ
    • Kinetic Energy
      • KE = Half mv squared
      • Always Positive
      • Work-Energy Theorem
        • W net = Change in KE
    • Potential Energy
      • Gravitational PE
        • mgh
      • Spring PE
        • Half kx squared
      • Reference Level Arbitrary
    • Conservation of Energy
      • Conservative Forces
        • Path Independent
        • KE + PE = Constant
      • Non-Conservative Forces
        • Friction
        • Mechanical Energy Decreases
    • Collisions
      • Elastic
        • KE Conserved
        • Momentum Conserved
      • Inelastic
        • Only Momentum Conserved
      • Perfectly Inelastic
        • Bodies Stick Together

Work, Energy and Power

Work, Energy and Power

The map in words

  • Work, Energy and Power
    • Work
    • Energy
    • Power
    • Conservative Forces
    • Non-Conservative Forces
    • Collisions

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Frequently Asked Questions

What are the important topics in Work, Energy and Power for NIOS Class 12 Physics?
Key topics in Work, Energy and Power include Work – Scientific Definition and Formula, Power – Rate of Doing Work, Kinetic Energy and the Work-Energy Theorem, Potential Energy – Gravitational and Elastic. Study these first, then practise questions on each for the NIOS Class 12 board exam.
What do the concept maps for Work, Energy and Power show?
The 4 maps show how the ideas in Work, Energy and Power connect: Work, Energy and Power – Complete Chapter Overview; Perfect Format for Physics Numerical Problems. Each map is also written out as an outline on this page.
How should I revise Work, Energy and Power for the NIOS Class 12 board exam?
Learn the core ideas first, then work through the 45 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.

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All NIOS Class 12 Physics Concept Maps

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