17. A rod of length L rotates counterclockwise with constant angular velocity w about one end in a constant magnetic field (as shown in the figure).(a) Find the magnitude of the motional emf in the rod by two ways .(b) Determine the direction of the motional emf in

17. A rod of length L rotates counterclockwise with constant angular velocity w about one end in a constant magnetic field (as shown in the figure).(a) Find the magnitude of the motional emf in the rod by two ways .(b) Determine the direction of the motional emf in

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 38A

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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

17. A rod of length L rotates
counterclockwise with constant
angular velocity w about one end in
a constant magnetic field (as shown
in the figure).(a) Find the
magnitude of the motional emf in
the rod by two ways .(b) Determine
the direction of the motional emf in
the rod.
•0-
a

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