Concept explainers
The number of elementary charges in a particle.
Answer to Problem 79A
The number of elementary charges carried by the particle is
Explanation of Solution
Given:
A force of
perpendicular to a uniform magnetic field of strength
Formula Used:
The force acting on a particle is dependent on the strength of magnetic field, velocity of motion, charge and the angle which the velocity vector makes with the magnetic field. It is mathematically expressed as,
Here, the force is given and based on the remaining parameters, the charge contained in the particle is to be calculated. Having found the charge, the number of elementary charges can eb obtained as,
Here, n denotes the number of elementary charges and e denotes the charge of one electron which is
Calculation:
For the given strength of magnetic field
Now, the number of elementary charges can be calculated as,
The above result has been rounded to the nearest whole number since the number of elementary charges is to be a whole number.
Conclusion:
Therefore, the number of elementary charges of the unknown particle is 2.
Chapter 24 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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