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CBSE 12 Physics Part 1
Explore and master the fundamentals of CBSE 12 Physics Part 1
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.Chapter 1
ELECTRIC CHARGES AND FIELDS
This chapter delves into the concept of electric charges and fields, introducing the fundamental nature of electric charges, their interactions, and the properties of both conductors and insulators. It explains Coulomb's Law, the concept of electric fields, and the principles governing electric dipoles and flux, alongside Gaussian surfaces. The chapter concludes with significant applications of these concepts in understanding electric behavior in various configurations.
Chapter 2
ELECTROSTATIC POTENTIAL AND CAPACITANCE
The chapter explores the fundamental concepts of electrostatic potential and capacitance. It explains the nature of electric potential energy, the significance of conservative forces, the definition and calculation of capacitance, and the behavior of capacitors in series and parallel configurations. Additionally, it discusses dielectrics and their effects on capacitance, as well as the energy stored in capacitors and the principles of electrostatics relating to conductors.
Chapter 3
CURRENT ELECTRICITY
This chapter discusses the fundamental principles of electric current and its behavior in conductors. It covers Ohm's law, the characteristics of conductors, and the impact of temperature on resistance. Additionally, it introduces concepts like current density, electromotive force, and Kirchhoff's rules for circuits, culminating in practical applications such as the Wheatstone bridge.
Chapter 4
MOVING CHARGES AND MAGNETISM
The chapter delves into the interconnection of electricity and magnetism, emphasizing the principles surrounding electric fields, magnetic fields, and the forces exerted on moving charges. Key concepts include the Lorentz force, the Biot-Savart law, and the behaviors of current-carrying conductors in magnetic fields, alongside practical measurements via a moving coil galvanometer. The chapter ultimately bridges theoretical understanding with practical applications relevant to electromagnetism.
Chapter 5
MAGNETISM AND MATTER
Magnetism is a universal phenomenon observed in various forms, ranging from galactic scales to atomic interactions. This chapter explores the foundational concepts of magnetism, including bar magnets, magnetic fields, and classifications of materials based on their magnetic properties such as diamagnetism, paramagnetism, and ferromagnetism. Key principles, including Gauss's law for magnetism, magnetic moments, and the behavior of materials in magnetic fields, are detailed to enhance understanding of both theoretical and practical aspects of magnetism.
Chapter 6
ELECTROMAGNETIC INDUCTION
Electromagnetic induction establishes the fundamental relationship between electricity and magnetism, as demonstrated by the experiments of Faraday and Henry. The chapter provides a detailed explanation of Faraday's laws of induction, the concept of magnetic flux, and the significance of inductance in electrical circuits, highlighting applications such as AC generators. The phenomenon not only serves theoretical interests but also plays a crucial role in modern technology, including the production of electric power.
Chapter 7
ALTERNATING CURRENT
The chapter covers alternating current (ac) and its properties, particularly focusing on ac voltages and currents as they apply to resistors, inductors, and capacitors. Key topics include the phase relationships between voltage and current, the use of phasors for circuit analysis, resonant frequency in RLC circuits, and the function of transformers in altering voltage levels. The chapter concludes with various exercises and practical applications of these concepts.
Chapter 8
ELECTROMAGNETIC WAVES
The chapter discusses electromagnetic waves, beginning with the concept of displacement current introduced by Maxwell to reconcile inconsistencies in Ampere's law. It highlights Maxwell's equations, the relationship between electric and magnetic fields, and the generation of electromagnetic waves through accelerated charges. Additionally, the chapter outlines the electromagnetic spectrum and its various applications in technology.