In the Magnetic Field of a Current experiment, when we decrease the current in the coil, which of the following is true? O a. The direction of the magnetic field of Earth does not change but its magnitude decreases. O b. The magnitude of the total magnetic field at the center of the coil increases but its direction does not change. O c. The magnitude and direction of the coil's magnetic field at the center change. O d. Both magnitudes of the magnetic fields of the coil and Earth decrease. O e. Both the total magnetic field at the center of the tangent galvanometer and the angle of deflection of the compass decrease.

In the Magnetic Field of a Current experiment, when we decrease the current in the coil, which of the following is true? O a. The direction of the magnetic field of Earth does not change but its magnitude decreases. O b. The magnitude of the total magnetic field at the center of the coil increases but its direction does not change. O c. The magnitude and direction of the coil's magnetic field at the center change. O d. Both magnitudes of the magnetic fields of the coil and Earth decrease. O e. Both the total magnetic field at the center of the tangent galvanometer and the angle of deflection of the compass decrease.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 7OQ

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