Download MAGNETISM!

MAGNETISM!
Who doesn’t think magnets are cool?
MAGNETIC FIELD
• Understand the concept of a magnetic field
– Is it like an electric field?
– What produces it?
– Does it have direction?
– How do we know the direction?
MAGNETIC FIELD AROUND A
CURRENT-CARRYING WIRE
• Know how to find the magnitude and
direction of the magnetic field around a
current-carrying wire
– There is a formula to calculate the magnitude
(which we will confirm in the lab)
– There is a right-hand rule for the direction
FORCE ON A CURRENT-CARRYING
WIRE OR A MOVING CHARGED
PARTICLE IN A MAGNETIC FIELD
• Know how to find the magnitude and
direction of the force on either a currentcarrying wire OR a moving charged particle in
a magnetic field
– There is a formula to calculate the magnitude
– There is a right-hand rule for the direction
ELECTROMAGNETIC INDUCTION
• Understand the concept of electromagnetic
induction
– Be able to calculate the flux through a loop
– Be able to calculate the magnitude and direction
of the induced emf in a conducting loop if the
magnetic flux changes
• There is an equation for calculating the magnitude of
the induced emf
• There is a four-step process for finding the direction of
the induced emf
TRANSFORMERS
• Know how a transformer works, and be able
to calculate voltage and current for the
primary and secondary coils of a transformer
– There is one formula for calculating the voltages
– The currents can be calculated with a formula you
already know: P = IV
IN SUMMARY ….
In this chapter you will learn five new equations
and three right-hand rules
You will be calculating magnetic field, force, emf
(which is a fancy name for voltage), and current.
You will continue to use Newton’s Second Law,
the concept of vectors, and Ohm’s Law.