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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 54
Q

A circular coil 12.0 cm in diameter and containing nine loops lies flat on the ground. The Earth’s magnetic field at this location has magnitude 5.50×10−5 T5.50 \times 10^{-5} \textrm{ T} and points into the Earth at an angle of 56.0∘56.0 ^\circ below a line pointing due north. If a 7.20-A clockwise current passes through the coil,

  1. determine the torque on the coil, and
  2. which edge of the coil rises up: north, east, south, or west?
A
2.25×10−5 N m2.25 \times 10^{-5} \textrm{ N m}
Giancoli 7th Edition, Chapter 20, Problem 54 solution video poster
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