17 A Bar Magnet Is Held Vertically With Its Upper End A Little Bit Below The Center Of A Horizontal Metal Ring The Upp 1 (68.79 KiB) Viewed 37 times
17 A Bar Magnet Is Held Vertically With Its Upper End A Little Bit Below The Center Of A Horizontal Metal Ring The Upp 2 (44.94 KiB) Viewed 37 times
17 A Bar Magnet Is Held Vertically With Its Upper End A Little Bit Below The Center Of A Horizontal Metal Ring The Upp 3 (36.66 KiB) Viewed 37 times
17. A bar magnet is held vertically with its upper end a little bit below the center of a horizontal metal ring. The upper end of the magnet is its north pole, as shown in the figure. The bar magnet is now dropped. An observer views the ring from above its center. To this observer, how will the induced current in the ring behave as the magnet falls? s A. B. The current will flow clockwise and be increasing The current will flow clockwise and be decreasing The current will flow counter-clockwise and be increasing The current will flow counter-clockwise and be decreasing C. D.
18. A coil lies flat on a tabletop in a region where the magnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the direction of the induced current in this coil as the field fades? A. counter-clockwise then clockwise clockwise then counter-clockwise B. С. clockwise D. counter-clockwise
19. The emf induced in a conductor moving at right angles to a magnetic field does not depend upon A. B. length of the conductor resistance of the conductor speed of the conductor strength of the magnetic field C. D.
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