NCERT Grade 12 Physics Chapter 7, Alternating Current is from Unit 4, Electromagnetic Induction and Alternating Current. In this chapter, students will learn about AC, its transmission, derivatives, etc. Introduction to AC, AC Voltage Applied to a Resistor, Representation of AC Current and Voltage by Rotating Vectors — Phasors, AC Voltage Applied to an Inductor, AC Voltage Applied to a Capacitor, AC Voltage Applied to a Series LCR Circuit, Phasor-Diagram Solution, Analytical Solution, Resonance, Power in AC Circuit: The Power Factor, LC Oscillations and Transformers are the topics studied in this chapter. Diagrams, graphs, illustrations, energy diagrams and examples associated to daily life make this chapter very interesting and easy to learn.
Solved numeral problems and unsolved ones for practice make the students understand the concept better and develop a strong grip on the subject. The contribution of eminent scientists such as Nicola Tesla, George Westinghouse and others towards Alternating Current has helped to develop laws on the topic that the students shall study through this chapter. Detailed derivations to help derive formulas and equations will aid to solve the problems and understand the concepts. NCERT Grade 12 Physics Chapter 7, Alternating Current is from Unit 4, Electromagnetic Induction and Alternating Current. Unit 4 holds a total weightage of 8 marks in the final examination according to the latest pattern.
Get 100 percent accurate NCERT Solutions for Class 12 Physics Chapter 7 (Alternating Current) solved by expert Physics teachers. We provide solutions for questions given in Class 12 Physics text-book as per CBSE Board guidelines from the latest NCERT book for Class 12 Physics. The topics and sub-topics in Chapter 7 Alternating Current are given below.
Ex 7.1 - INTRODUCTION
Ex 7.2 - AC VOLTAGE APPLIED TO A RESISTOR
Ex 7.3 - REPRESENTATION OF AC CURRENT AND VOLTAGE BY ROTATING VECTORS — PHASORS
Ex 7.4 - AC VOLTAGE APPLIED TO AN INDUCTOR
Ex 7.5 - AC VOLTAGE APPLIED TO A CAPACITOR
Ex 7.6 - AC VOLTAGE APPLIED TO A SERIES LCR CIRCUIT
Ex 7.6.1 - Phasor-diagram solution
Ex 7.6.2 - Analytical solution
Ex 7.6.3 - Resonance
Ex 7.8 - LC OSCILLATIONS
Ex 7.9 - TRANSFORMERS.
We cover all exercises in the chapter given below:-
Chapter 7 Exercises - 26 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Alternating Current. Download the free PDF of Chapter 7 Alternating Current and take the print out to keep it handy for your exam preparation.