Physics (5th Edition)
5th Edition
ISBN: 9780134051802
Author: Walker
Publisher: PEARSON
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Textbook Question
Chapter 22, Problem 1CQ
Two charged particles move at right angles to a magnetic field and deflect in opposite directions. Can one conclude that the particles have opposite charges?
Expert Solution & Answer
To determine
The two particle perpendicular to magnetic field deflected opposite to each other have opposite charges.
Answer to Problem 1CQ
No, the two particles that is perpendicular to magnetic field deflected opposite to each other always have different charges.
Explanation of Solution
Given info: The direction of motion of particle to the magnetic field is
Explanation:
The charged particle in a magnetic field always deflects in the direction of the magnetic force experienced by them and the direction of the magnetic force is found by the right hand rule of magnetic force.
For positive charged particle, point the fingers of your right hand in the direction of velocity, curl of your finger in the direction of magnetic field then thumb of your right points the direction of magnetic force or the direction in which positively charged particle deflects.
Now, for negative charged particle, point the fingers of your right hand in the direction of velocity, curl of your finger in the direction of magnetic field then thumb of your right points the direction of magnetic force but reverse to the direction for positive charged particles or the direction in which negatively charged particle deflects.
From the above rule, it is clear that the particle having opposite charged only deflects opposite to each other.
Conclusion:
Therefore, two particles at right angle to magnetic field deflected opposite to each other always have different charges.
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Chapter 22 Solutions
Physics (5th Edition)
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