# NCERT Solutions for Class 12 Physics Chapter 3

NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity in PDF form based on latest NCERT Books and option to study online. Topic wise questions for the competitive exams like JEE Mains and advance, NEET, AIIMS, etc., with answers for practice are given below.

## NCERT Solutions for Class 12 Physics Chapter 3 Go back to NCERT Solutions 12 Physics Main Page

Download NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity in PDF form with the links given below.

### Practice Questions for Competitive Exams

Following are the questions with answers given at the end of the chapter based on different topics of Current Electricity, for the competitive exams like AIIMS, JEE, NEET and similar other exams.

##### Electric Current

Basic questions based on Electric current, charges and time taken for the movement of group of electrons, etc. See Answers. ##### Drift Velocity & Mobility

Questions based on Drift velocity and mobility along with their dependency of other factors. Electric current density and their relation with current and area of cross-section of wire. See Answers.  ##### Ohm’s Law & Its limitations

Ohm’s law, electrical resistivity and conductivity, limitations of Ohm’s law with examples and description using graph of V-I. See Answers. ##### Colour Code for Resistors

Colour codes for Carbon resistors on the basis of B B R O Y G B V G W. Temperature dependence of resistivity, the empirical formula for resistivity and temperature. See Answers. ##### EMF & Terminal Voltage

Electromotive force (emf) and terminal voltage of electric cells. The relation between terminal voltage and emf of cell, Electrical energy consumed in resistance, Electrical energy consumed in D.C.source, etc. See Answers.  ##### Kirchhoff’s Rule & Combination of Resistors

Kirchhoff’s rules for current and voltage in a closed circuit, Resistors in parallel and series combination, calculations of total effective resistance in each case. See Answers.      ##### Combination of Cells

Combination of two or more cells, calculation of their effective EMF, internal resistance, current through the circuit and equivalent internal resistance in combination. See Answers. ##### Wheatstone Bridge & Potentiometer

Questions based on Potentiometer with their various combinations of cell and resistance, comparison of two cells or calculation of EMF of a cell using Wheatstone bridge. See Answers.  ##### Electrical Energy & Power

Electrical Energy stored in a cell, work done and power of a cell. Heat produced using Joule’s law and numerical problems based on this. See Answers.  