Class 12 NCERT • Physics Part 1 (New Syllabus)
Physics Part 1 Ch 03: Current Electricity
Select a topic or study module below to explore electric current, drift velocity, Ohm’s law, resistance and resistivity, combination of resistors, cells, EMF, internal resistance, Kirchhoff’s laws, Wheatstone bridge, potentiometer, and comprehensive textbook numerical solutions.
Topic 01 • Electric Current Basics
Exploring Electric Current, Current Density, Thermal Motion, and Drift Velocity of Electrons
Topic 02 • Ohm’s Law & Resistance
Analyzing Origin of Resistivity, Relaxation Time, Mobility, and Temperature Dependence of Resistance
Topic 03 • Energy, Power & Resistors
Studying Joule Heating, Electric Power, Series and Parallel Resistor Networks, and Color Code of Carbon Resistors
Topic 04 • Cells, EMF & Internal Resistance
Investigating Electromotive Force (EMF), Terminal Potential Difference, Cells in Series and Parallel
Topic 05 • Kirchhoff’s Laws
Examining Junction Rule (Conservation of Charge), Loop Rule (Conservation of Energy), and Complex Networks
Topic 06 • Wheatstone & Meter Bridge
Analyzing Balanced Bridge Condition, Unknown Resistance Calculations, and Meter Bridge Experimental Setup
Topic 07 • Potentiometer
Studying Potential Gradient, Comparison of EMFs of Two Primary Cells, and Determination of Internal Resistance
Module 08 • Solutions & Numericals