Working electron. An electron with charge -|e| and mass me is launched with an initial velocity vî — vyĵ + v₂k to the uniform magnetic field Bî. What is the work done by the magnetic field on the electron? A. zero 1 B. —⁄me (v² + v²) 1 C. • zme (v² + v² + v²) 1 D.mv²/ Ꭰ Cylinder. A closed cylindrical surface has radius R and height H. What is the magnetic flux through the curved portion of the cylinder if a uniform magnetic field of strength Bo is oriented 30° relative to the cylinder's axis?

Working electron. An electron with charge -|e| and mass me is launched with an initial velocity vî — vyĵ + v₂k to the uniform magnetic field Bî. What is the work done by the magnetic field on the electron? A. zero 1 B. —⁄me (v² + v²) 1 C. • zme (v² + v² + v²) 1 D.mv²/ Ꭰ Cylinder. A closed cylindrical surface has radius R and height H. What is the magnetic flux through the curved portion of the cylinder if a uniform magnetic field of strength Bo is oriented 30° relative to the cylinder's axis?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter26: Electromagnetism

Section26.1: Interactions Of Electric And Manetic Fields And Matter

Problem 2PP

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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

1. Working electron. An electron with charge -|e| and mass me is launched with an initial
velocity vî - vyî + v₂k to the uniform magnetic field Bî. What is the work done by the
magnetic field on the electron?
A. zero
B.
1
me
me (v² + v²)
2. Cylinder. A closed cylindrical surface has radius R and height H. What is the magnetic
flux through the curved portion of the cylinder if a uniform magnetic field of strength Bo
is oriented 30° relative to the cylinder's axis?
A. zero
√√3
B.
C. /me (v² + v² + v²)
1
D. mv²/
TRB
C.
2" R² Bo
D. TR² Bo

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