NCERT Solutions Class 12 Physics Chapter 6 - Electromagnetic Induction

Electromagnetic induction (EMI) is the sixth chapter of Physics in 12th-grade and is one of the most important advances in the history of sciences. The chapter discusses both aspects of current producing magnetic fields as well as generating current from a changing magnetic field. It is the first time that both concepts have been presented in the same chapter and will give the student an appreciation of both fields of study that are now directly related to each other through laws of mathematics. The contributions made by Michael Faraday and Joseph Henry to the understanding of how to calculate the induced emf due to a change in a magnetic field will be included.

Students who understand the concept of EMI will have a solid understanding of how electricity is generated in the modern age, including the creation of electricity from large hydroelectric dams all the way to charging our smartphones with no physical connection. EMI will continue to be a major focus of study in CBSE Board Exams, JEE, and NEET.

The NCERT Solutions for EMI (Chapter 6 in Class 12 Physics) were written to provide students with an opportunity to master the concepts related to magnetic flux and the direction of induced current. They also bridge the gap between mechanical energy and electrical energy. In addition, the solutions make the interaction between geometry and magnetism easy to understand.

1.0Download NCERT Solutions Class 12 Physics Chapter 6 Electromagnetic Induction: Free PDF

It is necessary to have a thorough understanding of area rate of change and vector areas when studying EMI. By using the NCERT Solutions provided in the PDF format, you will strengthen your understanding of Faraday's Laws and Lenz's Law so that you can confidently predict the amount and direction of induced emf. All steps of each exercise are shown in this collection and will assist you in addressing motional emf, eddy currents, self/mutual inductance.

2.0Class 12 Physics Chapter 6 Electromagnetic Induction: Key Concepts

This chapter focuses on the production of electricity through magnetic means and the properties of coils in varying fields. The key lessons include:

• Magnetic Flux is defined as the total amount of magnetic field passing through an area and how changes to the orientation and strength of the fields will affect such flux.
• Faraday's Law of Induction allows us to determine that the induced electromotive force (emf) equals the rate of change with respect to time of the magnetic flux.
• According to Lenz's Law and the Law of Conservation of Energy, the direction of the induced current can be determined, and it will always oppose the change that created it.
• The Motional Electromotive Force is the emf that is created when a conductor moves across a constant magnetic field.
• Eddy Currents are formed by the circulating currents that are induced in large bulk pieces of conductors. They also have many uses in technologies such as Magnetic Brakes and Induction Furnaces. 
• Inductance (both Self-Inductance and Mutual Inductance) helps to examine how a changing current within a coil creates an induced emf on itself or on adjoining coils. Factors influencing these coefficients must be considered.
• The basic concept of an AC generator is to convert mechanical energy into alternating electrical energy using electromagnetic induction.

3.0Key Features of NCERT Solutions for Class 12 Physics Chapter 6

• Applications of Lenz's Law - Examples include examples to demonstrate how to apply Lenz's Law correctly (and how that is often an area in which students make mistakes).
• Step by Step Derivation - Takes the "complicated" air of such things as how to find the motional emf of a rotating rod and mutual inductance of two long coaxial solenoids and breaks it down step by step.
• Work Energy Analysis - Shows the relationship between work and energy; work done to move a magnet produces electrical energy.
• Inductance Calculation - Thorough explanation of the physical characteristics (the number of turns and the type of core) that determine a solenoid's self-inductance value.
• How To Use This Information In The Real World - An extensive section on eddy currents gives an overview of the heat that they can create and also discusses the constructive uses of them in modern technology.