ELECTROMAGNETIC
INDUCTION
Chapter 34
INTRODUCTION
Electromagnetic
induction is the scientific
principle that underlies
many modern
technologies, from the
generation of electricity
to communications and
data storage.
Chapter Goal: To
understand and apply
e
PHY 1020U Physics II
Tutorial2(GaussLaw,ElectricPotentialandCapacitors)
Summary
Gausss law relates the amount of charge Qin in a closed surface to the net electric fluxe through
that surface (called a Gaussian surface):
e
in
Two situations commonl
1. Model: The charge distribution in the shell has spherical symmetry.
Visualize:
The spherical surfaces of radii r Rout, r Rin, and Rin r Rout, concentric with the spherical shell, are Gaussian
surfaces.
Solve: (a) Gausss law for the Gaussian surface r R
PHY 1020U Physics II
Tutorial1(WaveOpticsandRayOptics)
Summary
The ray model of light considers light to travel in straight lines. The wave model of light considers
light to be a wave propagating through space. In the wave model diffractio
THE MAGNETIC FIELD,
PART II
Chapter 33
TOPICS
Magnetic force
On a moving charge
On wires
On current loops
Magnetic properties of matter
Lecture 9 (Ch 33) Magnetic field
PHY1020U S'12
2
THE MAGNETIC FORCE ON MOVING
CHARGE
Just like how the electric fi
CURRENT AND
RESISTANCE
Chapter 31
INTRODUCTION
Lights, sound systems,
microwave ovens, and
computers are all connected
by wires to a battery or an
electrical outlet. How and
why does electric current
flow through a wire?
Chapter Goal: To learn how
and why
ELECTROMAGNETIC
FIELDS AND WAVES
Chapter 35
WHAT DO WE KNOW SO FAR?
Charges create an electric field.
Charges feel an electric field.
Moving charges create a magnetic field.
Moving charges feel a magnetic field.
(Then theres the fact the a changing magnet
RAY OPTICS
Chapter 23
INTRODUCTION
Our everyday experience
that light travels in straight
lines is the basis of the ray
model of light.
Ray optics apply to a
variety of situations,
including mirrors, lenses,
and shiny spoons.
Chapter Goal: To
understand a
F UNDAMENTALS OF
C IRCUITS
C hapter 32
I NTRODUCTION
Surprising as it may seem,
t he power of a computer
i s achieved simply by the
c ontrolled flow of charges
t hrough tiny wires and
c ircuit elements.
Chapter Goal: To
u nderstand the
f undamental phys
WAVE OPTICS
Chapter 22
INTRODUCTION
Light is an
electromagnetic wave.
The interference of light
waves produces the colors
reflected from a CD, the
iridescence of bird feathers,
and the technology underlying
supermarket checkout
scanners and optical
compu
POTENTIAL AND FIELD
Chapter 30
INTRODUCTION
To understand the
production of electricity by
solar cells or batteries, we
must first address the
connection between
electric potential and
electric field.
Chapter Goal: To
understand how the
electric potential
PHY 1020U Physics II
Tutorial4(MagneticField)
Summary
Magnetism is caused by moving charges. The magnetic field is given by the BiotSavart law, which for
a point charge is and current segment is
and
.
The unit vector points from the
PHY 1020U Physics II
Tutorial3(Current,resistanceandcircuits)
Summary
Current: Due to an electric field inside a conductor a current (I) will flow through it. The current is
caused by the net motion of electrons past a point.
I is the rate at which
Physics I Laboratory
Faculty of Science, UOIT
Lab Report PhyI-03: Dynamics Laws
Students name: Kavenaa Uthayachandran CRN: 41920
Date: Oct.15.2014
Glider mass : 0.189 kg Hanger mass: 0.005 kg
M: the mass of the glider with or without extra masses: 0.189 k
Physics I Laboratory
Faculty of Science, UOIT
Lab Report PhyI-02: Mechanical Equilibrium
Students name: Kavenaa Uthayachandran CRN: 41920 Date: Oct.1.2014
Experiment 1: Translational Equilibrium (Vector Addition)
First angle: 60, mass at first pulley = ma
T HE MAGNETIC FIELD,
PART I
C hapter 33
I NTRODUCTION
Digital information is
s tored on a hard disk as
m icroscopic patches of
m agnetism.
Just what is magnetism?
H ow are magnetic fields
c reated? What are their
p roperties? These are the
q uestions we
Answers to Tutorial 3 Problems:
Problem 1) 31.11. Visualize:
The current density J in a wire, as given by Equation 31.13, does not depend on the thickness of the wire.
Solve: (a) The current in the wire is
I wire
1
1.5 10 3 m
2
4.5 105 A/m 2
J wire Awire
Tutorial 1 Solutions:
Chapter 22:
Problem 1: (Pb. 22.35) Solve: According to Equation 22.7, the fringe spacing between the m fringe and
the m 1 fringe is y L d . y can be obtained from Figure1. Because the separation between the m 2
fringes is 2.0 cm, two
PHY 1020U Physics II
Tutorial6(ACCircuits)
Summary
Chapter 36 AC Circuits
When dealing with AC Circuits, we use lowercase variables to distinguish the instantaneous current
or voltage we are looking for. i refers to instantaneous current, and v to in
AC CIRCUITS
C hapter 36
I NTRODUCTION
Today, a grid of AC
e lectrical distribution
s ystems spans the United
S tates and other countries.
Any device that plugs into an
e lectric outlet uses an AC
c ircuit.
In this chapter, you will learn
s ome of the b
Tutorial 6 Solutions
Question 1
Visualize: Figure EX36.7 shows a simple one-capacitor circuit.
Solve: (a) From Equation 36.11,
50 103 A
V
V
80 kHz
I C C C CVC 2 fCVC f
X C 1/ C
2 5.0 V 20 109 F
(b) The AC current through a capacitor leads the ca
PHY 1020U Physics II
Tutorial5(ElectromagneticInductionandLCcircuits)
Summary
There are two ways to create an induced current: (1) a motional emf due to magnetic forces on
moving charge carriers, and (2) an induced electric field due to a changing m
GAUSSS LAW
Chapter 28
INTRODUCTION
The nearly spherical shape
of the girls head
determines the electric
field that causes her hair
to stream outward.
Using Guasss law, we can
deduce electric fields,
particularly those with a
high degree of symmetry,
simpl
ELECTRIC CHARGES AND
FORCES
Chapter 26
INTRODUCTION
The electric force is one of
the fundamental forces of
nature. Controlled electricity
is the cornerstone of our
modern, technological
society.
Chapter Goal: To develop
a basic understanding of
electric
T HE ELECTRIC
P OTENTIAL
C hapter 29
I NTRODUCTION
At any time, millions of light
b ulbs are transforming
e lectric energy into light and
t hermal energy.
Just as electric fields allowed
u s to understand electric
f orces, E lectric Potential
a llows us
T HE MAGNETIC FIELD,
PART I
C hapter 32
I NTRODUCTION
Digital information is
s tored on a hard disk as
m icroscopic patches of
m agnetism.
Just what is magnetism?
H ow are magnetic fields
c reated? What are their
p roperties? These are the
q uestions we
P OTENTIAL AND FIELD
C hapter 2 9
T HE FIELD AND THE POTENTIAL
The electric field and the electric potential are not
d istinct entities:
T hey are two different perspectives of how source
c harges alter the space around them.
Lecture 9 - Potential and fi