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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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