The electric field of an electro-magnetic wave is given by Ey = 25 sin(2.4 $\times$ 106 $\pi$ (x - 3.0 $\times$ 108t)).What is the wavelength of the wave?

A) 4.8 $\times$ 107 m B) 2.1 $\times$ 10-8 m C) 2.1 $\times$ 10-7 m D) 8.3 $\times$ 10-7 m E) 7.5 $\times$ 10-6 m A) 4.8 $\times$ 107 m B) 2.1 $\times$ 10-8 m C) 2.1 $\times$ 10-7 m D) 8.3 $\times$ 10-7 m E) 7.5 $\times$ 10-6 m

Exam 30: Maxwells Equations and Electromagnetic Waves

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Arrange the following types of electromagnetic radiation in order of increasing wavelength: gamma rays,infrared light,ultraviolet light,visible light.

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Question 21

The electric field in a region of space varies according to where t is in seconds.The maximum displacement current through a 2.00-m² area perpendicular to E is approximately

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Question 22

There are many different regions to the electromagnetic spectrum.These include,(a)visible light,(b)gamma-rays,(c)infra-red,(d)micro-waves,(e)radio-waves,(f)ultra-violet,and (g)X-rays.Put them in order of increasing wavelength,starting with the shortest wavelength first.

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Question 23

A 60-W light bulb emits spherical electromagnetic waves uniformly in all directions.If 50% of the power input to such a light bulb is emitted as electromagnetic radiation,what is the radiation pressure at a distance of 2.0 m from the light bulb?

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Question 24

The rms value of the magnitude of the magnetic field in an electromagnetic wave is B_rms = 0.137 T.The intensity of this wave is approximately

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Question 25

Light wave A has twice the frequency of light wave B.The wavelength of light wave A is _____ that of light wave B.

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Question 26

An AC voltage,V = 20 V sin (1000 rad/s t)is applied across a capacitor of capacitance C = 40 $\mu$ F.The capacitor is made of two circular plate each of radius r = 5 cm.What is the peak magnetic field at the circumference of the capacitor?

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Question 27

The wavelength of a 150-MHz television signal is approximately

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Question 28

A common unit of length in astronomy is the parsec,where 1 parsec = 3.26 light years.How many seconds does it take a radio signal to travel one parsec through space?

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Question 29

The frequency range for FM broadcasts is from 87.9 - 107.9 MHz in the U.S.In terms of wavelengths,the range corresponds to

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Question 30

A parallel-plate capacitor has closely spaced circular plates of radius R = 3.00 cm.Charge is flowing onto the positive plate at the rate I = dQ/dt = 3.65 A.The magnetic field at a distance r = 1.50 cm from the axis of the plates is approximately

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Question 31

Which of the following statements is true?

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Question 32

The intensity of solar radiation on Earth is about 1.4 $\times$ 10³ W/m².How many 50-W light bulbs would you have to arrange in an array 3 m from you in order to obtain the same intensity as the Sun?

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Question 33

Which of the following statements is true?

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Question 34

Electromagnetic waves that have a wavelength of 300 m in free space have a frequency of

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Question 35

Which of the following statements contradicts one of Maxwell's equations?

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Question 36

Maxwell generalized Ampère's law to read from which the displacement current is defined as

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Question 37

Which of the following statements is true?

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Question 38

The electric field of an electro-magnetic wave is given by E_y = 25 sin(2.4 $\times$ 10⁶ $\pi$ (x - 3.0 $\times$ 10⁸t)).What is the wavelength of the wave?

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Question 39

The rms value of the electric field in an electromagnetic wave is E_rms = 200 V/m.The intensity of this wave is approximately

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Question 40

Showing 21 - 40 of 57

Exam 30: Maxwells Equations and Electromagnetic Waves

Arrange the following types of electromagnetic radiation in order of increasing wavelength: gamma rays,infrared light,ultraviolet light,visible light.

The electric field in a region of space varies according to where t is in seconds.The maximum displacement current through a 2.00-m2 area perpendicular to E is approximately

There are many different regions to the electromagnetic spectrum.These include,(a)visible light,(b)gamma-rays,(c)infra-red,(d)micro-waves,(e)radio-waves,(f)ultra-violet,and (g)X-rays.Put them in order of increasing wavelength,starting with the shortest wavelength first.

A 60-W light bulb emits spherical electromagnetic waves uniformly in all directions.If 50% of the power input to such a light bulb is emitted as electromagnetic radiation,what is the radiation pressure at a distance of 2.0 m from the light bulb?

The rms value of the magnitude of the magnetic field in an electromagnetic wave is Brms = 0.137 T.The intensity of this wave is approximately

Light wave A has twice the frequency of light wave B.The wavelength of light wave A is _____ that of light wave B.

An AC voltage,V = 20 V sin (1000 rad/s t)is applied across a capacitor of capacitance C = 40 μ\muμ F.The capacitor is made of two circular plate each of radius r = 5 cm.What is the peak magnetic field at the circumference of the capacitor?

The wavelength of a 150-MHz television signal is approximately

A common unit of length in astronomy is the parsec,where 1 parsec = 3.26 light years.How many seconds does it take a radio signal to travel one parsec through space?

The frequency range for FM broadcasts is from 87.9 - 107.9 MHz in the U.S.In terms of wavelengths,the range corresponds to

A parallel-plate capacitor has closely spaced circular plates of radius R = 3.00 cm.Charge is flowing onto the positive plate at the rate I = dQ/dt = 3.65 A.The magnetic field at a distance r = 1.50 cm from the axis of the plates is approximately

Which of the following statements is true?

The intensity of solar radiation on Earth is about 1.4 ×\times× 103 W/m2.How many 50-W light bulbs would you have to arrange in an array 3 m from you in order to obtain the same intensity as the Sun?

Which of the following statements is true?

Electromagnetic waves that have a wavelength of 300 m in free space have a frequency of

Which of the following statements contradicts one of Maxwell's equations?

Maxwell generalized Ampère's law to read from which the displacement current is defined as

Which of the following statements is true?

The electric field of an electro-magnetic wave is given by Ey = 25 sin(2.4 ×\times× 106 π\piπ (x - 3.0 ×\times× 108t)).What is the wavelength of the wave?

The rms value of the electric field in an electromagnetic wave is Erms = 200 V/m.The intensity of this wave is approximately

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The electric field in a region of space varies according to where t is in seconds.The maximum displacement current through a 2.00-m² area perpendicular to E is approximately

The rms value of the magnitude of the magnetic field in an electromagnetic wave is B_rms = 0.137 T.The intensity of this wave is approximately

An AC voltage,V = 20 V sin (1000 rad/s t)is applied across a capacitor of capacitance C = 40 $\mu$ F.The capacitor is made of two circular plate each of radius r = 5 cm.What is the peak magnetic field at the circumference of the capacitor?

The intensity of solar radiation on Earth is about 1.4 $\times$ 10³ W/m².How many 50-W light bulbs would you have to arrange in an array 3 m from you in order to obtain the same intensity as the Sun?

The electric field of an electro-magnetic wave is given by E_y = 25 sin(2.4 $\times$ 10⁶ $\pi$ (x - 3.0 $\times$ 10⁸t)).What is the wavelength of the wave?

The rms value of the electric field in an electromagnetic wave is E_rms = 200 V/m.The intensity of this wave is approximately