Current Electricity

Electric current, resistance, drift velocity and Kirchhoff’s laws.

1.Introduction to Current Electricity
A simple introduction to electric current, why charges move and how electricity flows in a circuit.
2.Electric Charge and Conservation of Charge
Understand what electric charge is, how charges interact and why charge is always conserved.
3.Electric Current
Learn what electric current means as the rate of flow of electric charges through a conductor.
4.Electric Potential and Potential Difference
Beginner-friendly explanation of electric potential and voltage using simple real-life analogies.
5.Ohm’s Law
Understand the relationship between current, voltage and resistance through Ohm’s Law.
6.Resistance and Resistivity
Learn how materials oppose current flow and how resistivity depends on the nature of material.
7.Factors Affecting Resistance
Study how length, area, temperature and material influence electrical resistance.
8.Drift Velocity and Mobility
Understand how electrons drift in a conductor and what mobility means in current flow.
9.Electric Power and Energy
Learn how electrical power and energy are calculated and used in daily-life appliances.
10.Heating Effect of Electric Current
Understand why current produces heat and the concept of Joule’s law of heating.
11.Combination of Resistors
Learn how resistances add in series and parallel circuits with simple examples.
12.Cells, EMF and Internal Resistance
Beginner-friendly explanation of EMF, terminal voltage and the effect of internal resistance.
13.Combination of Cells
Study cells connected in series and parallel to understand how total EMF and current change.
14.Kirchhoff’s Laws
Learn Kirchhoff’s current and voltage laws used to solve complex electric circuits.
15.Meter Bridge
Understand how a meter bridge works and how it is used to determine unknown resistance.
16.Wheatstone Bridge
Learn the principle of Wheatstone bridge and how it helps measure resistance accurately.
17.Potentiometer
Study the working of the potentiometer and how it measures EMF and potential difference.