What is the mean power density (mW/cm 2 ), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

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Answer 1

Question

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

(b)

To determine

What is the maximum electric field strength at that distance?

(c)

To determine

What is the maximum magnetic field strength at that distance?

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The ICNIRP also has guidelines for magnetic-field exposure for the general public. In the frequency range of 25 Hz to 3 kHz, this guideline states that the maximum allowed magnetic-field amplitude is 5>f T, where f is the frequency in kHz. Which is a more stringent limit on allowable electromagnetic-wave intensity in this frequency range: the electric-field guideline or the magnetic-field guideline? (a) The magnetic-field guideline, because at a given frequency the allowed magnetic field is smaller than the allowed electric field. (b) The electric-field guideline, because at a given frequency the allowed intensity calculated from the electric-field guideline is smaller. (c) It depends on the particular frequency chosen (both guidelines are frequency dependent). (d) Neither—for any given frequency, the guidelines represent the same electromagneticwave intensity

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Answer 2

Question

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

(b)

To determine

What is the maximum electric field strength at that distance?

(c)

To determine

What is the maximum magnetic field strength at that distance?

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

(b)

To determine

What is the maximum electric field strength at that distance?

(c)

To determine

What is the maximum magnetic field strength at that distance?

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

(b)

To determine

What is the maximum electric field strength at that distance?

(c)

To determine

What is the maximum magnetic field strength at that distance?

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

(b)

To determine

What is the maximum electric field strength at that distance?

(c)

To determine

What is the maximum magnetic field strength at that distance?

Answer 6

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

Answer 7

Chapter 2, Problem 2.31P

(a)

To determine

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

Answer 8

(b)

To determine

What is the maximum electric field strength at that distance?

Answer 9

(b)

To determine

What is the maximum electric field strength at that distance?

Answer 10

(c)

To determine

What is the maximum magnetic field strength at that distance?

Answer 11

(c)

To determine

What is the maximum magnetic field strength at that distance?

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

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Answer 15

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What is the mean power density (mW/cm 2 ), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

Solution Summary: The author calculates the mean power density (mW/cm2) at a distance of 50 km, assuming the electromagnetic energy to be isotropically radiated.

What is the mean power density (mW/cm²), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

What is the maximum electric field strength at that distance?

What is the maximum magnetic field strength at that distance?

Want to see the full answer?

Chapter 2 Solutions

What is the mean power density (mW/cm 2 ), at a distance of 50 km if a radio station transmits at a power of 50,000 W. Assuming the electromagnetic energy to be isotropically radiated (in the case of a real radio transmitter, emission is not isotropic)?

Solution Summary: The author calculates the mean power density (mW/cm2) at a distance of 50 km, assuming the electromagnetic energy to be isotropically radiated.