(a)
Value of magnetic field to make a beam go undeflected through an electric field.
(a)
Answer to Problem 83GP
The value of magnetic fieldis
Explanation of Solution
Given:
+x -axis is taken towards right side and +y -axis is taken vertically up.
The speed of electrons
The electric field
Let B be the magnetic field.
Formula used:
The electron is undeflected when the force due to magnetic field balances the force due to electric field.
Calculation:
Substituting the values,
Conclusion:
The value of magnetic field, so the t the electron is undeflected in the electric filed is
(b)
The direction of magnetic field.
(b)
Answer to Problem 83GP
The magnetic field is out of the plane (+z axis).
Explanation of Solution
Given:
+x -axis is taken towards right side and +y -axis is taken vertically up.
The speed of electrons
The electric field
Let B be the magnetic field.
Formula used:
The electron is undeflected when the force due to magnetic field balances the force due to electric field.
Calculation:
Due to the upward electric field, the electric force on the electron acts vertically downwards. Therefore, the magnetic force is in vertically upward direction. Using right hand rule with electron, the magnetic field is directed in the +z direction (out of the plane)
Conclusion:
The magnetic field is out of the plane.
(c)
The frequency of the circular orbit of the electrons when the electric field is turned off.
(c)
Answer to Problem 83GP
The frequency of the circular orbit of the electron when the electric field is
Explanation of Solution
Given:
+x -axis is taken towards right side and +y -axis is taken vertically up.
The speed of electrons
The electric field
The mass of electron
The charge of electron
Let f be the frequency of the circular orbit.
Formula used:
Calculation:
Substituting the values,
Conclusion:
The frequency of the circular orbit of the electron when the electric field is turned off is 5.8×107 Hz.
Chapter 20 Solutions
Physics: Principles with Applications
Additional Science Textbook Solutions
Physics: Principles with Applications
Lecture- Tutorials for Introductory Astronomy
Essential University Physics: Volume 2 (3rd Edition)
College Physics
Essential University Physics (3rd Edition)
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON