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Reading Quiz Ch 34 (EM Waves)

Reading Question 34.06

 An electromagnetic plane wave is coming toward you, out of the screen. At one instant, the electric fieldlooks as shown. Which is the wave's magnetic field at this instant?

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The magnetic field is instantaneously zero.

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Correct

 E ⃗   × B⃗   is in the direction of motion.

Reading Question 34.04 

Experimenter A creates a magnetic field in the laboratory. Experimenter B moves relative to A.

Experimenter B sees

 just the same magnetic field.

a magnetic field of different strength.

a magnetic field pointing in the opposite direction.

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   just an electric field.

 both a magnetic and an electric field.

Reading Question 34.07

 A vertically polarized light wave of intensity 1000 mW/m2 is coming toward you, out of the screen. After

passing through this polarizing filter, the wave's intensity is

0 mW/m2

.

250 mW/m2.

500 mW/m2.

707 mW/m2.

333 mW/m2.

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Correct

I  = I  _0 cos2θ. 

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Reading Question 34.01 

Maxwell’s equations are a set of how many equations?  

Two

Three

Four

Five

Six

Reading Question 34.02

Maxwell introduced the displacement current as a correction to

Coulomb’s law. 

Gauss’s law. 

Biot-Savart’s law. 

Ampère’s law. 

Faraday’s law. 

Reading Question 34.03

The law that characterizes polarizers is called

Malus’s law. 

Maxwell’s law 

Poynting’s law. 

Lorentz’s law 

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Reading Question 34.05

Experimenters on Earth have created the magnetic field

shown. A rocket flies through the field, from right to left.

Which is/are the field(s) in the rocket's reference frame?

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Correct

Correct!