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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
20
Magnetism
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20-3: Force on Electric Current in Magnetic Field
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20-4: Force on Charge Moving in Magnetic Field
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20-5 and 20-6: Magnetic Field of Straight Wire, Force between Two Wires
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20-7: Solenoids and Electromagnets
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20-8: Ampère's Law
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20-9 and 20-10: Torque on Curent Loop, Motors, Galvanometers
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20-11: Mass Spectrometer
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20-12: Ferromagnetism, Hysteresis
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 50
Q
  1. Use Ampère’s law to show that the magnetic field between the conductors of a coaxial cable (Fig. 20–61) is B=μ0I/2πrB = \mu_0I/2 \pi r if rr (distance from center) is greater than the radius of the inner wire and less than the radius of the outer cylindrical braid (= ground).
  2. Show that B = 0 outside the coaxial cable.
Coaxial cable. Problem 50.
Figure 20-61 Coaxial cable.
A
  1. B=μoI2πrB = \dfrac{\mu_oI}{2\pi r}
  2. Zero
Giancoli 7th Edition, Chapter 20, Problem 50 solution video poster
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