NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current

 

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NCERT solutions for class 12 Physics chapter 7 Alternating current- The supply that we receive in our home is alternating in nature. Do you know what is the value of normal supply voltage that is coming in our home and what is the supply frequency? Do you ever think about how the current bill is calculated? This chapter NCERT solutions for class 12 Physics chapter 7 Alternating current will help you to clear such doubts. The alternating current in our daily application can be of a single phase which is coming in our home or can be of three phases which are usually used in industries. Here in  NCERT solutions for class 12 Physics chapter 7 Alternating current you will study about single phase alternating current.

In this NCERT grade 12 chapter 7, you will study the concept of phasor diagrams. The knowledge of the chapter complex numbers will help you to understand the phasors and the problems in  NCERT solutions for class 12 Physics chapter 7 Alternating current. To solve the circuited related problem of NCERT grade 12 chapter 7 Alternating current you must refresh the Kirchhoff's voltage law and Kirchoff's current law that you have studied in NCERT class 12 chapter 3 current electricity.

The content of NCERT solutions for class 12 Physics chapter 7 Alternating current is distributed under following headings.

7.1 Introduction
7.2 AC Voltage Applies to a Resistor
7.3 Representation of AC Current and Voltage by Rotating Vectors- PHASORS
7.4 AC Voltage Applied to an Inductor
7.5 AC Voltage Applied to a Capacitor
7.6 AC Voltage Applied to a Series LCT circuit
7.6.1 Phasor-diagram solution
7.6.3 Resonance
7.7 Power In AC Circuit: The Power Factor 
7.8 LC Oscillations
7.9 Transformers

The last session of NCERT solutions for class 12 Physics chapter 7 Alternating current gives an introduction to single phase transformers. And also talks about step up and step down transformers.

The NCERT solutions of class 12 chapter 7 Alternating current are given below:

Q-7.1 A 100 W resistor is connected to a 220 V , 50 Hz ac supply. What is the net power consumed over a full cycle?

Q-7.2 The peak voltage of an ac supply is 300 V. What is the rms voltage?

View all solved exercise questions of chapter 7 Alternating Current here

NCERT Solutions for Class 12 Physics- Chapter wise

Chapter 1

Electric Charges and Fields

Chapter 2

Electrostatic Potential and Capacitance

Chapter 3

Current Electricity

Chapter 4

Moving charges and magnetism

Chapter 5

Magnetism and Matter

Chapter 6

Electromagnetic Induction

Chapter 8

Electromagnetic Waves

Chapter 9

Ray Optics and Optical Instruments

Chapter 10

Wave Optics

Chapter 11

Dual nature of radiation and matter

Chapter 12

Atoms

Chapter 13

Nuclei

Chapter 14

Semiconductor Electronics: Materials, Devices and Simple Circuits

NCERT Solutions for Class 12

 

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