Maxwell's Equations

 

Maxwell's Equations

Lists all of Maxwell's Equations together in both integral and differential forms; also derives the speed of light from Maxwell's Equations in vacuum.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Displacement Current

Introduces the displacement current in the context of Ampere's Law in a charging capacitor, and states the Ampere-Maxwell Law.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Inconsistency in Ampere's Law leads to new term; calculation of displacement current; application to RC circuit; complete Maxwell's Equations.

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Maxwell's Equations in Vacuum

Solutions of E-field and B-field wave equations in vacuum.

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1D Electromagnetic Waves

Proof that light is an EM wave; connection with SI units; measuring c.

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Gauss's Law for Magnetism

States Gauss's Law for magnetic field by analogy with Gauss's Law for electric field, using the non-existence of magnetic monopoles.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Cut in a Thick Wire

A thick wire with a narrow cut builds up charge; find the electric and magnetic fields between the ends of the wire. Solution is included after problem.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Energy in a Charging Capacitor

Find the electric and magnetic fields over time and the voltage at a point within a charging capacitor; use these to find the total stored energy. Solution is included after problem.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Plane Electromagnetic Wave

Given the electric field of a plane electromagnetic wave, find its propagation direction and the corresponding magnetic field. Solution is included after problem.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Conceptual Ampere-Maxwell Questions

Characterize the circulation of magnetic field on an Amperian loop within a charging or discharging capacitor.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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EM Plane Wave Questions

Find the electric component of an electromagnetic plane wave consistent with the given magnetic component; and vice versa.

  • 8.02 Physics II: Electricity and Magnetism, Spring 2007
    Prof. John Belcher, Dr. Peter Dourmashkin, Prof. Robert Redwine, Prof. Bruce Knuteson, Prof. Gunther Roland, Prof. Bolek Wyslouch, Dr. Brian Wecht, Prof. Eric Katsavounidis, Prof. Robert Simcoe, Prof. Joseph Formaggio, Andy Neely, Matthew Strafuss, Prof. Eric Hudson, Dr. Sen-Ben Liao

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Sound Wave

How do you know sound is not an EM wave?

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Plane Wave

4-part problem; finding direction, λ of wave; deciding whether it can be sound or EM.

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