Chapter 23
Electric Fields
Electricity and Magnetism
The laws of electricity and magnetism play a central role in the operation of many
modern devices.
The interatomic and intermolecular forces responsible for the formation of solids
and liquids are elect
GAUSS LAW
ELECRIC FLUX
Dr Manjunatha S
Plasma ball, the colorful lines emanating from the
sphere give evidence of strong electric field.
Dr MANJUNATHA S, CS&IS
2
Gausss Law
Karl Friedrich Gauss
(17771855) German mathematician
Dr MANJUNATHA S, CS&IS
3
Gau
Ch:27 Electric current &
current density
Basic electric circuit and its diagram.
What causes the flow of electrons in a
circuit.
Current density
Drift velocity
Higher Potential
Energy
+
Lower Potential
Energy

To cause movement of a charge,
there must be
Chapter 26
Capacitance
Key contents
Capacitors
Calculating capacitance
Energy stored in a capacitor
Capacitors with dielectric materials
25.2: Capacitance:
To store charge
To store energy
To control variation time
scales in a circuit
What is Capacitance?
GROUP MEMBERs
Imran Gujjar
Kaleem Ullah
Dilawar Gull
Sufyan Maqsood
Muhammad Umair Ghufran
Gausss Law
Karl Friedrich Gauss
(17771855) German mathematician
Gausss Law
Already can calculate the Efield of an
arbitrary charge distribution using
Coulombs Law
Ch 24 Gausss Law
Karl Friedrich Gauss
(17771855) German mathematician
Ch 24 Gausss Law
Already can calculate the Efield of an
arbitrary charge distribution using
Coulombs Law.
Gausss Law allows the same thing, but
much more easily
so long as the charge
Ch 24 Gausss Law
Karl Friedrich Gauss
(17771855) German mathematician
Ch 24 Gausss Law
Already can calculate the Efield of an
arbitrary charge distribution using
Coulombs Law.
Gausss Law allows the same thing, but
much more easily
so long as the charge
Lecture 2
Electric
Electric
Electric
Electric
field
field lines
field due to point charge
field due to dipole
The Concept of a Field
A field is defined as a property of space in
which a material object experiences a force.
Above earth, we say there is a g
Lecture 1
TOPICS TO BE COVERED;
Introduction
Atomic physics
Energy bands
Conductors
Insulators
Coulombs law
Conservation & quantization of electric charge
INTRODUCTION
We are surrounded by devices that depend on
the physics of electromagnetism
It