Ncert Solutions Physics Class 12th

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Pallavi Pathak

Contributor-Level 10

The concepts help students to introduce the magnetic effects produced by electric currents. These concepts are important for the theoretical and applied physics. It includes the key concepts which are fundamental to understanding magnetic fields and serves as the foundation for many devices. Such key concepts include Ampere's circuital law, Biot–Savart law, and Lorentz force and it serves foundation for the following devices - galvanometers, electric motors, and particle accelerators. Practicing these concepts is essential for students who are aiming to pursue electronics, engineering, or physics at higher levels. It is also useful f

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Pallavi Pathak

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Kirchhoff's laws include the Loop Rule (KVL) and the Junction Rule. These are helpful in analyzing complex electrical circuits. The solutions explain the concepts behind these laws and help them in applying in various example problems involving the EMF sources and multiple resistors. By thoroughly practicing these solutions, the students learn how to choose the junctions and loops strategically for solving problems. This also helps in preparing for exams that include circuit analysis.

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Pallavi Pathak

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According to the class 12 Physics chapter 3 NCERT solutions, Ohm's Law is a foundational principle in electrical circuits. It states that when the temperature is constant, the current passing through a conductor is directly proportional to the voltage across it. The NCERT solutions explain the law using equations, diagrams and practical examples. They include the solutions where the students apply Ohm's Law in different circuit configurations - mixed, parallel and series. It helps them to understand the application of Ohm's Law better. The step-by-step methods help students to understand the logic used in the solutions and make it easy

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Pallavi Pathak

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The Class 12 Physics Chapter 3 NCERT solutions focus on understanding the electric charge movement and the factors affecting it. The main topics include drift velocity, current density, electric current, resistivity, resistance, Ohm's law, internal resistance, the combination of resistors in series and parallel, power, electromotive force (EMF), and important circuit laws like Kirchhoff's rules. Chapter 3 also includes practical devices like the meter bridge, potentiometer, and Wheatstone bridge. NCERT solutions offer a perfect blend of theoretical and practical numerical applications and help students apply the concepts in exams and r

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Pallavi Pathak

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Chapter 3 Current Electricity offers various numerical problems related to resistance, current, energy, power, circuit laws and EMF. The solutions given here give a systematic approach to solving NCERT problems, selecting the appropriate formula, starting from identifying the known and unknown variables, and performing the calculations correctly. Each step is explained clearly and in detail to help students understand the "why" and "how" behind each step and they understand the logic used behind the steps and solutions. The approach helps in improving the problem-solving skills and building the confidence of the students. With regular

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Pallavi Pathak

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Yes, mastering the NCERT concepts is more than sufficient to score high in the board exams. Most of the questions in the Class 12 board exam are based on NCERT textbook content. Hence, the students can build a strong understanding of the important topics and numerical problem solving by regularly using the NCERT solutions for guidance and by thoroughly practicing from here. The chapter 3 solutions given here help reinforce the correct approach and ensure that no question is left unexplained. However, the students preparing for the board exams can also solve the previous years' question papers and exemplar problems. However, for scoring

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Pallavi Pathak

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It is a great source of study for students preparing for various exams as it gives step-by-step answers to all the NCERT textbook questions. The solutions help students to understand the right approach and logic required to solve the problems of this chapter. This chapter involves several important concepts including EMF, resistance, Ohm's law, and Kirchhoff's laws, which can be difficult to understand without proper guidance. The NCERT solutions break down the theoretical and complex numerical questions in a simple manner and are strictly based on the CBSE pattern which helps students in focused exam preparation. Also, the NCERT conce

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Pallavi Pathak

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The energy stored in a sytem of charges due to their positions in the electric field is called the electrostatic potential energy. The energy for the two charges q1 and q2 separated by distance r is:

The energy is positive if both charges are of the same sign and it is negative if for the opposite signs. When a system has over two charges, the energy is calculated by the sum of energies of all unique pairs. This concept helps analyze behaviour and stability of charged systems.

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Pallavi Pathak

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When placed in an electric field, polarization is the alignment of dipole moments in a dielectric material. In a dielectric, molecules are randomly oriented. When an electric field is applied, it creates induced dipoles by slight shift in molecules from positive to negative. This weakend the net field, reduces the internal electric field and allow more charge storage. The polarization is quantified as:

Here, V is the volume, Pm is the total dipole moment. The polarization is a key concept in understanding the dielectric behavior in capacitors and it leads to increased capacitance.

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Pallavi Pathak

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In an electric field, energy density is the amount of energy stored per unit volume . For a linera or vacuum dieletric, it is given by:

E is the electric field magnitude and ?0  is the permittivity of free space. 

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