A proton is accelerated from rest through a potential difference of V = 150 V. It then enters a region of uniform magnetic field where it moves in a circular path of radius 12 cm and hits the screen 24 cm from the entry point. a) What is the magnitude of the magnetic field? b) Suppose that a “He nucleus is accelerated through the same potential and sent into the same magnetic field. A *He nucleus has twice the charge of a proton and four times its mass. How far from the entry point does the alpha particle hit the screen? O O o o O o o o O O O O o o' o o o io O O

A proton is accelerated from rest through a potential difference of V = 150 V. It then enters a region of uniform magnetic field where it moves in a circular path of radius 12 cm and hits the screen 24 cm from the entry point. a) What is the magnitude of the magnetic field? b) Suppose that a “He nucleus is accelerated through the same potential and sent into the same magnetic field. A *He nucleus has twice the charge of a proton and four times its mass. How far from the entry point does the alpha particle hit the screen? O O o o O o o o O O O O o o' o o o io O O

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 72AP: A particle moving downward at a speed of 6.0106 m/s enters a uniform magnetic field that is...

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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

A proton is accelerated from rest through a potential
difference of V = 150 V. It then enters a region of uniform
magnetic field where it moves in a circular path of radius
12 cm and hits the screen 24 cm from the entry point.
a) What is the magnitude of the magnetic field?
b) Suppose that a “He nucleus is accelerated through the
same potential and sent into the same magnetic field.
A *He nucleus has twice the charge of a proton and four
times its mass. How far from the entry point does the
alpha particle hit the screen?
O O o o
O o o o
O O O
O o o' o
o o io
O O

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