The figure below shows a ring whose plane is perpendicular to your screen (the dashed parts are behind the screen and the solid parts are in front of the screen). A bar magnet is moved away from the ring in the direction show with vM . Choose the correct direction for external flux through the ring (\PhiΦ), the change in external flux through the ring (\Delta\PhiΔΦ) and the direction of the induced magnetic field (B_{ind}Bind) caused by the current induced in the ring. a.Φ: right \Delta\PhiΔΦ: increasing (or pointing right) B_{ind}Bind: right B.\PhiΦ: right \Delta\PhiΔΦ: increasing (or pointing right) B_{ind}Bind: left C.\PhiΦ: right \Delta\PhiΔΦ: decreasing (or pointing left) B_{ind}Bind: right D.\PhiΦ: left \Delta\PhiΔΦ: decreasing (or pointing right) B_{ind}Bind: right E.\PhiΦ: left \Delta\PhiΔΦ: decreasing (or pointing right) B_{ind}Bind: left F\PhiΦ: right \Delta\PhiΔΦ: decreasing (or pointing left) B_{ind}Bind: left

The figure below shows a ring whose plane is perpendicular to your screen (the dashed parts are behind the screen and the solid parts are in front of the screen). A bar magnet is moved away from the ring in the direction show with vM . Choose the correct direction for external flux through the ring (\PhiΦ), the change in external flux through the ring (\Delta\PhiΔΦ) and the direction of the induced magnetic field (B_{ind}Bind) caused by the current induced in the ring. a.Φ: right \Delta\PhiΔΦ: increasing (or pointing right) B_{ind}Bind: right B.\PhiΦ: right \Delta\PhiΔΦ: increasing (or pointing right) B_{ind}Bind: left C.\PhiΦ: right \Delta\PhiΔΦ: decreasing (or pointing left) B_{ind}Bind: right D.\PhiΦ: left \Delta\PhiΔΦ: decreasing (or pointing right) B_{ind}Bind: right E.\PhiΦ: left \Delta\PhiΔΦ: decreasing (or pointing right) B_{ind}Bind: left F\PhiΦ: right \Delta\PhiΔΦ: decreasing (or pointing left) B_{ind}Bind: left

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 89CP: The accompanying figure shows a flat, infinitely long sheet of width a that carries a current I...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

Choose the correct direction for external flux through the ring (\PhiΦ), the change in external flux through the ring (\Delta\PhiΔΦ) and the direction of the induced magnetic field (B_{ind}Bind) caused by the current induced in the ring.

a.Φ: right

\Delta\PhiΔΦ: increasing (or pointing right)

B_{ind}Bind: right

B.\PhiΦ: right

\Delta\PhiΔΦ: increasing (or pointing right)

B_{ind}Bind: left

C.\PhiΦ: right

\Delta\PhiΔΦ: decreasing (or pointing left)

B_{ind}Bind: right

D.\PhiΦ: left

\Delta\PhiΔΦ: decreasing (or pointing right)

B_{ind}Bind: right

E.\PhiΦ: left

\Delta\PhiΔΦ: decreasing (or pointing right)

B_{ind}Bind: left

F\PhiΦ: right

\Delta\PhiΔΦ: decreasing (or pointing left)

B_{ind}Bind: left

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