Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
20

20-3: Force on Electric Current in Magnetic Field
20-4: Force on Charge Moving in Magnetic Field
20-5 and 20-6: Magnetic Field of Straight Wire, Force between Two Wires
20-7: Solenoids and Electromagnets
20-8: Ampère's Law
20-9 and 20-10: Torque on Curent Loop, Motors, Galvanometers
20-11: Mass Spectrometer
20-12: Ferromagnetism, Hysteresis

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 32
Q

A horizontal compass is placed 18 cm due south from a straight vertical wire carrying a 48-A current downward. In what direction does the compass needle point at this location? Assume the horizontal component of the Earth’s field at this point is 0.45×104 T0.45 \times 10^{-4} \textrm{ T} and the magnetic declination is 00 ^\circ.

A
40 N of W40^\circ \textrm{ N of W}
Giancoli 7th Edition, Chapter 20, Problem 32 solution video poster
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