NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity


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NCERT solutions for class 12 Physics chapter 3 Current Electricity: Current is the flow of electric charge through a given area. And we cannot see this current but we can experience it. An example is an electric shock. If we want to utilize the charge flow we must have a closed path. NCERT class 12 Physics solutions for chapter 3 Current Electricity explains you about the factors affecting the current flow, how current is flowing in a conductor, basics laws related to current electricity and circuit analysis and a few measuring devices. In this page, we also provide you with NCERT solutions for class 12 Physics chapter 3 Current Electricity in detail.

Do you know how current is produced? And how it reaches our home? There are many methods of production of current. It may be using fuel, steam, water, nuclear power etc. These methods are not there in NCERT solutions for class 12 Physics chapter 3 Current Electricity. If you are interested you can search for these. Here we present the solution of the NCERT 12 chapter 3 current electricity. The exercises in this chapter will help you to boost your knowledge.

NCERT Class 12 Chapter 3 Current Electricity deals with the following topics

3.1 Introduction
3.2 Electric Current
3.3 Electric Currents In Conductors
3.4 Ohm’s Law
3.5 Drift Of Electrons And The Origin Of Resistivity
3.5.1 Mobility
3.6 Limitations Of Ohm’s Law
3.7 Resistivity Of Various Materials
3.8 Temperature Dependence Of Resistivity
3.9 Electrical Energy, Power
3.10 Combination Of Resistors – Series And Parallel
3.11 Cells, Emf, Internal Resistance
3.12 Cells In Series And In Parallel
3.13 Kirchhoff’s Rules
3.14 Wheatstone Bridge
3.15 Meter Bridge
3.16 Potentiometer

NCERT solutions for class 12 Physics chapter 3 Current Electricity introduces two basic laws which are Ohm’s law and Kirchoff's law. Using these laws you can solve most of the problems related to the chapter.

  • A simple form of Ohm’s law is 

V=IR, where V is the voltage applied across the conductor, I is the current through the conductor. This law is valid under a constant condition of temperature and pressure. And all the materials do not obey Ohm’s law. Usually, conductors obey Ohm’s law.

The second law related to NCERT solutions for class 12 Physics chapter 3 Current Electricity is Kirchoff’s law. There are two laws

  1. Kirchoff’s current law or junction law: the law states that current entering a junction = current leaving the junction
  2. Kirchoff’s voltage law: in a closed circuit algebraic sum of voltages =0

 NCERT solutions for class 12 Physics chapter 3 Current Electricity is given below in detail:

Q 3.1- The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.4 Ohm, what is the maximum current that can be drawn from the battery?

View all solved exercise questions of Chapter 3 Current Electricity here.

NCERT Solutions for Class 12 Physics- Chapter wise

Chapter 1

Electric Charges and Fields

Chapter 2

Electrostatic Potential and Capacitance

Chapter 4

Moving charges and magnetism

Chapter 5

Magnetism and Matter

Chapter 6

Electromagnetic Induction

Chapter 7

Alternating Current

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


Chapter 13


Chapter 14

Semiconductor Electronics: Materials, Devices and Simple Circuits

NCERT Solutions for Class 12


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