ICSE Class 12 Physics | 2. Current Electricity by Abraham | Learn Smarter
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Knowledge
2. Current Electricity

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Sections

  • 2

    Current Electricity

    Current electricity involves the flow of electric charge through conductors and is essential for understanding electrical circuits.

    Learning Practice

  • 2.1

    Electric Current

    This section defines electric current, explores its direction, and introduces the basic formula for calculating current.

    Learning Practice

  • 2.2

    Current In Conductors

    This section covers the concept of current in conductors, particularly focusing on the behavior of free electrons when a potential difference is applied.

    Learning Practice

  • 2.3

    Ohm’s Law

    Ohm's Law describes the relationship between voltage, current, and resistance in electrical circuits.

    Learning Practice

  • 2.4

    Resistivity And Conductivity

    This section defines resistivity and conductivity, explaining their relationships and dependencies on material properties and temperature.

    Learning Practice

  • 2.5

    Temperature Dependence Of Resistance

    Resistance in conductors increases with temperature, while it decreases in semiconductors.

    Learning Practice

  • 2.6

    Emf And Internal Resistance

    This section discusses the concepts of electromotive force (EMF) and internal resistance in electric cells.

    Learning Practice

  • 2.7

    Electrical Energy And Power

    Electrical energy is the work done by electric current and is related to power, which measures how quickly this work is done.

    Learning Practice

  • 2.8

    Combination Of Resistors

    This section explains the series and parallel combinations of resistors, detailing how current and voltage behave in each configuration.

    Learning Practice

  • 2.9

    Cells In Series And Parallel

    This section covers the configuration of cells in series and parallel, highlighting their effective emf and internal resistance.

    Learning Practice

  • 2.10

    Kirchhoff’s Rules

    Kirchhoff's Rules consist of Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage Law (KVL), which provide crucial techniques for analyzing electrical circuits.

    Learning Practice

  • 2.11

    Wheatstone Bridge

    The Wheatstone Bridge is an electrical circuit used to measure unknown resistances by balancing two legs of a bridge circuit.

    Learning Practice

  • 2.12

    Meter Bridge

    The Meter Bridge is an application of the Wheatstone bridge used to determine unknown resistances through a wire of uniform cross-section.

    Learning Practice

  • 2.13

    Potentiometer

    The potentiometer is a device used to measure the electromotive force (emf) of electric cells and is based on the principle that the potential difference across a uniform wire is proportional to its length.

    Learning Practice

References

12 physics ch2.pdf

Class Notes

Memorization

Revision Tests