×
Get Full Access to Introduction To Electrodynamics - 4 Edition - Chapter 11 - Problem 6p
Get Full Access to Introduction To Electrodynamics - 4 Edition - Chapter 11 - Problem 6p

×

# Find the radiation resistance (Prob. 11.3) for the

ISBN: 9780321856562 45

## Solution for problem 6P Chapter 11

Introduction to Electrodynamics | 4th Edition

• Textbook Solutions
• 2901 Step-by-step solutions solved by professors and subject experts
• Get 24/7 help from StudySoup virtual teaching assistants

Introduction to Electrodynamics | 4th Edition

4 5 1 395 Reviews
17
5
Problem 6P

Problem 6P

Find the radiation resistance (Prob. 11.3) for the oscillating magnetic dipole in Fig. 11.8. Express your answer in terms of λ and b, and compare the radiation resistance of the electric dipole.

figure 11.8

Reference Prob. 11.3

Find the radiation resistance of the wire joining the two ends of the dipole. (This is the resistance that would give the same average power loss—to heat—as the oscillating dipole in fact puts out in the form of radiation.) Show that R = 790 (d/λ)2 Ω, where λ is the wavelength of the radiation. For the wires in an ordinary radio (say, d = 5 cm), should you worry about the radiative contribution to the total resistance?

Step-by-Step Solution:
Step 1 of 3

Chapter 4: Energy and Heat 02/13/2017 ▯ Radiation o All objects emit electromagnetic radiation just because they have a temperature. This is a type of energy transfer by heat. o Rate at which energy is emitted increases with temperature (hotter objects emit more radiation). o The type of radiation given off also depends on temperature.  Type depends on the frequency of the electromagnetic wave.  Hotter objects emit radiation with higher frequencies (and therefore smaller wavelengths).  Examples: visible, infrared, ultraviolet, etc. ▯ ▯ Electromagnetic Radiation o Electromagnetic radiation: energy carried as electromagnetic waves. o Waves h

Step 2 of 3

Step 3 of 3