A
What concept did James Clerk Maxwell add to Ampère's law to make it mathematically consistent?
Displacement current
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According to Gauss's Law for magnetism, why is the total magnetic flux through a closed surface always zero?
Magnetic poles always exist in pairs
* 1.5X Points
In the electromagnetic field, what does the symbol ε represent? What about μ?
ε = permittivity
μ = permeability
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Maxwell calculated that electromagnetic waves travel at the speed of _____
Light
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What does the Poynting vector describe in terms of electromagnetic fields and space?
It describes how electromagnetic fields transport energy through space
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What formula is this, u = ½εE² + ½μH²
Energy density
* 0.5X point
What two laws, along with a vector identity, are used to derive the Poynting theorem?
Faraday's Law and Ampere-Maxwell's Law
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Maxwell's equations unified which three physical phenomena into a single framework?
Electricity, Magnetism, and Light
* 2X points
What is the symbol used to represent the Poynting vector?
S
* 4X point
Who experimentally demonstrated that a changing magnetic field induces an electric current?
Michael Faraday
* 3X points