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Basic Physics Practice Test: Electromagnetic Waves
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Related: Basic Physics Practice Test: Electromagnetic Induction and Faraday's Law

Basic Physics Practice Test: Electromagnetic Waves
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25 Questions

1. Visible light ranges in wavelength from
2. The basic equations for all electromagnetism were developed by
3. Radiation from the Sun reaches the Earth (above the atmosphereat a rate of about 1350 W/m2. Assume that this is a single EM wave and calculate the maximum value of the electric field."
4. An electromagnetic wave is traveling to the east. At one instant at a given point its E vector points straight up. What is the direction of its B vector?
5. What is the frequency of 20 mm microwaves?
6. A changing electric field will produce a
7. Radiation from the Sun reaches the Earth (above the atmosphereat a rate of about 1350 W/m2. Assume that this is a single EM wave and calculate the maximum value of the magnetic field."
8. How far does light travel in 1.0 ms?
9. How much energy is transported across a 1.00-cm2 area per hour by an EM wave whose electric field has an rms strength of 21.5 V/m?
10. What is the wavelength of light waves if their frequency is 5.0 ˛ 1014 Hz?
11. What is the wavelength of a 92.9-MHz radio wave?
12. What is the wavelength for the carrier wave in the station WBRN 1460?
13. Which of the following correctly lists electromagnetic waves in order from longest to shortest wavelength?
14. An electromagnetic wave is radiated by a straight wire antenna that is oriented vertically. What should be the orientation of a straight wire receiving antenna? It should be placed
15. Estimate the average power output of the Sun, given that about 1350 W/m 2 reaches the upper atmosphere of the Earth. The distance from the Sun to the Earth is 1.5 ˛ 1011 m.
16. The force per unit area exerted by an electromagnetic wave is called the
17. The strength of both the electric and magnetic fields in the radiation field are found to decrease with distance as
18. Electromagnetic waves are
19. Of the following, which is not electromagnetic in nature?
20. An electric field is produced by a
21. A 15.0-mW laser puts out a narrow beam 2.00 mm in diameter. What is the average (rmsvalue of the electric field?"
22. Electromagnetic waves can travel through
23. If the electric field in an EM wave has a peak value of 2.0 V/m, what is the peak value of the magnetic field?
24. In a vacuum, the velocity of all electromagnetic waves
25. What is the wavelength of a radio wave signal transmitted at a frequency of 7.2 MHz?

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