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This module will help you learn what Ampere's
Law is and how to use it to calculate the magnetic field given
the distribution of electric current. After finishing
you will know how to choose an appropriate Amperian loop,
and know how to use Ampere's law physically and mathematically.
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In
this module you will learn many of the physical characteristics
of electric fields. By the end of the module you will
understand how electric field is defined by the electric force
on a charge, that electric field is a vector, an electric
field is produced by a charge or a distribution of charges,
and how the magnitude and direction of the field depend on
the geometry of the distribution of sources. You will
learn to display electric fields and examine their geometric
properties, understand how field lines represent the strength
and direction of the field. Given an electric field,
you will be able to deduce the presence and relative magnitudes
of hidden charges producing it.
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The problem of creating a vector field as a gradient of a scalar
function is illustrated in Electrostatics. Starting from the electrostatics
of a single point charge, students are led through a series of exercises,
to the study of electrostatics of a more complex assembly of point
charges and continuous distribution of charges.
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This module will help you understand how a
circuit with an inductor and a capacitor undergoes an electromagnetic
oscillation, and how the period and frequency of an oscillation
depend on the inductance and capacitance. You should
also finish with an understanding of how the energy in a circuit
is conserved if there is no resistance.
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After completing this module you will know
what Gauss's law is, including when and how to use it, how
to select a useful Gaussian surface, and be able to use Gauss's
law physically and mathematically
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Once you have completed this module you will understand
that a changing magnetic field gives rise to an electric field, and
what magnetic flux is, how it is related to magnetic field, and how
it is different from magnetic field. Furthermore, you should understand
Faraday's Law of electromagnetic induction, and Lenz's Law and its importance
to induction. You will be able to determine the circulation of the electric
field (EMF), and understand its physical meaning
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This module will help you understand what
electrical current and resistance are, the relationship between
voltage, current, and resistance. You will also be able to
calculate these quantities for resistors in a circuit, the
resistance of a network of resistors, and the resistance of
a resistor given its size and shape and the resistivity of
its material.
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