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2 cards from this section. Quick, good the night before a test.
What does the displacement current represent?
Think of the electric field's role in creating a magnetic field.
Name three types of electromagnetic waves.
Recall the parts of the electromagnetic spectrum.
What did Maxwell introduce to address inconsistencies in Ampere's Law?
Think about what was missing from the original equation.
True or False: Electromagnetic waves can travel through a vacuum.
Consider how light travels from the sun to Earth.
A capacitor has a charging current of 1 A and its area is 0.01 m². Calculate the displacement current and the resulting magnetic field at a point 0.1 m away from the capacitor plates.
Don't forget to calculate the electric field first and use the appropriate permeability.
A wave in free space has a frequency of 1 GHz. Calculate its wavelength and the corresponding energy of a photon at that frequency.
Use the formulas you know and pay attention to units.
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