Electromagnetic Waves
Physics ⇒ Electricity and Magnetism
Electromagnetic Waves starts at 11 and continues till grade 12.
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Describe the effect of increasing the frequency of an electromagnetic wave on its energy.
Describe the main difference between electromagnetic waves and mechanical waves.
Explain the significance of the displacement current in Maxwell's equations.
Explain why electromagnetic waves are considered transverse waves.
Explain why electromagnetic waves can be polarized.
Explain why electromagnetic waves travel slower in glass than in air.
Name the scientist who first predicted the existence of electromagnetic waves.
State the relationship between the speed of light (c), the electric constant (ε0), and the magnetic constant (μ0).
A certain electromagnetic wave has a frequency of 2 × 1010 Hz. Identify the region of the electromagnetic spectrum it belongs to. (1) Radio, (2) Microwave, (3) Infrared, (4) Ultraviolet
Which equation represents the relationship between the frequency (f), wavelength (λ), and speed (v) of an electromagnetic wave? (1) v = fλ, (2) v = f + λ, (3) v = f / λ, (4) v = λ / f
Which law explains the generation of the magnetic field by a changing electric field in electromagnetic waves? (1) Faraday's Law, (2) Ampère-Maxwell Law, (3) Gauss's Law, (4) Lenz's Law
Which of the following electromagnetic waves has the highest energy? (1) Infrared, (2) Visible, (3) Ultraviolet, (4) Gamma rays
Electromagnetic waves are produced by accelerating ________.
The direction of propagation of an electromagnetic wave is given by the ________ product of the electric and magnetic fields.
The direction of the Poynting vector represents the direction of ________ transfer in an electromagnetic wave.
The energy carried by an electromagnetic wave is stored in its ________ and ________ fields.
State whether the following statement is true or false: Electromagnetic waves can travel through a perfect vacuum.
State whether the following statement is true or false: The electric field in an electromagnetic wave is always perpendicular to the magnetic field.
State whether the following statement is true or false: The magnetic field in an electromagnetic wave is always parallel to the direction of propagation.
True or False: The electric and magnetic fields in an electromagnetic wave are always perpendicular to each other and to the direction of propagation.
