ICSE Class 11 Electricity and Electronics | 4. Work, Power, and Energy by Pavan | Learn Smarter
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Academics

Grades

Grade 8 Grade 9 Grade 10 Grade 11 Grade 12

Curriculum

CBSE ICSE IB
Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Professional Courses
Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

games
Typing
Memory
Math
English Adventures
Knowledge
4. Work, Power, and Energy

Work, power, and energy are essential concepts in electricity, explaining how forces do work, how energy is transferred, and how power quantifies this process over time. The formulas for calculating these quantities are central to electrical systems. Understanding their relationships aids in analyzing circuits and optimizing energy efficiency.

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.

Sections

  • 4

    Work, Power, And Energy

    This section introduces the fundamental concepts of work, power, and energy in physics, especially in electrical contexts.

    Learning Practice

  • 4.1

    Introduction To Work, Power, And Energy

    This section introduces the fundamental concepts of work, power, and energy, essential for understanding electric circuits.

    Learning Practice

  • 4.2

    Work Done By Electric Current

    This section explains the concept of work done by electric current in circuits, detailing how electrical energy is transferred as charges move through a potential difference.

    Learning Practice

  • 4.2.1

    Work Done In A Circuit

    This section focuses on the work done by electric current in a circuit, defined as the energy transferred when electric charge moves through a potential difference.

    Learning Practice

  • 4.2.2

    Work Done In Terms Of Current

    This section outlines how to calculate the work done by electric current in a circuit using the relationship between current, voltage, and time.

    Learning Practice

  • 4.3

    Power In Electric Circuits

    This section explains the concept of power in electric circuits, covering how it is calculated and its relationship with voltage and current.

    Learning Practice

  • 4.3.1

    Electrical Power

    Electrical power is the rate at which electrical energy is consumed or converted into other forms in a circuit.

    Learning Practice

  • 4.3.2

    Units Of Power

    This section explains the concept of electrical power, its units, and how it is calculated in electric circuits.

    Learning Practice

  • 4.4

    Energy In Electric Circuits

    This section explains the concept of electrical energy, its calculation, consumption in kilowatt-hours, and its cost implications.

    Learning Practice

  • 4.4.1

    Electrical Energy

    This section discusses electrical energy, its calculation, and measurement in everyday devices.

    Learning Practice

  • 4.4.2

    Energy Consumption In Kilowatt-Hours

    This section explains how energy consumption is measured in kilowatt-hours (kWh) and how to calculate energy costs based on rates charged by power companies.

    Learning Practice

  • 4.4.3

    Energy And Cost Calculation

    This section covers the calculation of energy consumption in kilowatt-hours and the associated cost.

    Learning Practice

  • 4.5

    Work, Power, And Energy In Practical Applications

    This section describes how work, power, and energy concepts apply to everyday electrical appliances and systems, including energy loss in transmission and efficiency improvements.

    Learning Practice

  • 4.5.1

    Household Appliances

    Household appliances convert electrical energy into useful work, and their efficiency and power consumption are important considerations.

    Learning Practice

  • 4.5.2

    Power Loss In Electrical Transmission

    Power loss in electrical transmission occurs primarily due to resistance in the wires, leading to energy being dissipated as heat.

    Learning Practice

  • 4.5.3

    Efficient Use Of Energy

    This section discusses energy efficiency, focusing on the importance of using the least amount of energy necessary to perform tasks and introduces technologies that support this concept.

    Learning Practice

  • 4.6

    Conservation Of Energy In Electric Circuits

    This section covers the Law of Conservation of Energy as it applies to electric circuits, emphasizing energy conversion and methods for reducing energy consumption.

    Learning Practice

  • 4.6.1

    The Law Of Conservation Of Energy

    The Law of Conservation of Energy states that energy can neither be created nor destroyed, only transformed from one form to another.

    Learning Practice

  • 4.6.2

    Reducing Energy Consumption

    This section discusses methods for reducing energy consumption through energy-efficient devices and the adoption of renewable energy sources.

    Learning Practice

  • 4.7

    Conclusion

    This section encapsulates the significance of work, power, and energy in electrical circuits.

    Learning Practice

References

ee11-4.pdf

Class Notes

Memorization

What we have learnt

  • Work is done when a force m...
  • Power is the rate at which ...
  • Energy is the capacity to d...

Final Test

Revision Tests