Skip to main content
Chapter 5PhysicsCBSE Class 11

Work, Energy and Power

Work, Energy and Power is Chapter 5 of NCERT Class 11 Physics. The chapter covers Introduction, Notions of Work and Kinetic Energy: The Work-Energy Theorem, Work, Kinetic Energy, and more. Use this public guide to revise the official topic structure before asking Lerno for step-by-step help.

11 topicsChapter 5 of 14
Study with AI

Topics covered

11 sections
01

Introduction

IntroductionThe Scalar Product
02

Notions of Work and Kinetic Energy: The Work-Energy Theorem

Introduction
03

Work

Introduction
04

Kinetic Energy

Introduction
05

Work Done by a Variable Force

Introduction
06

The Work-Energy Theorem for a Variable Force

Introduction
07

The Concept of Potential Energy

Introduction
08

The Conservation of Mechanical Energy

Introduction
09

The Potential Energy of a Spring

Introduction
10

Power

Introduction
11

Collisions

IntroductionElastic and Inelastic CollisionsCollisions in One DimensionCollisions in Two Dimensions

Key concepts

IntroductionNotions of Work and Kinetic Energy: The Work-Energy TheoremWorkKinetic EnergyWork Done by a Variable ForceThe Work-Energy Theorem for a Variable ForceThe Concept of Potential EnergyThe Conservation of Mechanical EnergyIntroductionThe Scalar Product

Practice questions

Frequently asked

What is covered in Work, Energy and Power?

Work, Energy and Power is Chapter 5 in NCERT Class 11 Physics. The verified chapter structure includes Introduction, Notions of Work and Kinetic Energy: The Work-Energy Theorem, Work, Kinetic Energy, Work Done by a Variable Force.

How should I revise Work, Energy and Power?

Revise the chapter topic by topic: start with Introduction, Notions of Work and Kinetic Energy: The Work-Energy Theorem, Work, then practice questions that mix definitions, examples, and application steps.

Can I use Lerno for Class 11 Physics questions?

Yes. Lerno is built for CBSE students and uses NCERT-grounded context so students can ask for explanations, practice prompts, and step-by-step guidance for this chapter.

Study prompts

1

Explain Introduction from Work, Energy and Power and give one NCERT-style example or practice step.

2

Explain Notions of Work and Kinetic Energy: The Work-Energy Theorem from Work, Energy and Power and give one NCERT-style example or practice step.

3

Explain Work from Work, Energy and Power and give one NCERT-style example or practice step.

4

Explain Kinetic Energy from Work, Energy and Power and give one NCERT-style example or practice step.

5

Explain Work Done by a Variable Force from Work, Energy and Power and give one NCERT-style example or practice step.

6

Explain The Work-Energy Theorem for a Variable Force from Work, Energy and Power and give one NCERT-style example or practice step.

Explore this chapter

Practice QuestionsChapter-wise NCERT-aligned questionsSolutions GuideStep-by-step approach per topicChapter ExplanationTopic map for structured revision

AI Tutor · Free

Study “Work, Energy and Power” with Lerno

Get instant explanations, solved examples, and NCERT-aligned practice — grounded in your textbook, not generic AI answers.

Open Lerno — it's free