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Class 12 Physics Chapter 7 Alternating Current

The electric mains supply in our homes and offices is a voltage that varies like a sine function with time. Such a voltage is called alternating voltage (ac voltage) and the current driven by it in a circuit is called the alternating current (ac current)*. Today, most of the electrical devices we use require ac voltage. This is mainly because most of the electrical energy sold by power companies is transmitted and distributed as alternating current. The main reason for preferring use of ac voltage over dc voltage is that ac voltages can be easily and efficiently converted from one voltage to the other by means of transformers. Further, electrical energy can also be transmitted economically over long distances. AC circuits exhibit characteristics which are exploited in many devices of daily use. For example, whenever we tune our radio to a favorite station, we are taking advantage of a special property of ac circuits – one of many that you will study in this chapter.

Topics and Subtopics in NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current:

Section NameTopic Name
7Alternating Current
7.1Introduction
7.2AC Voltage Applied to a Resistor
7.3Representation of AC Current and Voltage by Rotating Vectors — Phasors
7.4AC Voltage Applied to an Inductor
7.5AC Voltage Applied to a Capacitor
7.6AC Voltage Applied to a Series LCR Circuit
7.7Power in AC Circuit: The Power Factor
7.8LC Oscillations
7.9Transformers

NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current

NCERT Class 12th Physics Solutions Chapter 7 Alternating Current
NCERT Class 12th Physics Solutions Chapter 7 Alternating Current
NCERT Class 12th Physics Solutions Chapter 7 Alternating Current

We hope the NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current help you. If you have any query regarding NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current, drop a comment below and we will get back to you at the earliest.

( Alternating Current ncert solution )

Having these notes and ncert solution can help the students to prepare and learn various class 12 physics concepts in an effective and easy way. All the diagrams, formulas and derivations are given in these notes to help the students acquaint with all the important chapters and concepts. Plus two physics notes includes a quick summary of the chapter, it saves a lot of time for the students.

Apart from the notes, students are also suggested to solve previous year questions papers and sample papers of physics to know the exam pattern and type of questions properly. Visit the links given below to get the question papers and sample papers.

CBSE Website

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