Concept explainers
The magnitude and direction for the velocity of an electron.
Answer to Problem 71GP
The velocity of an electron is
The electron moves towards west.
Explanation of Solution
Given:
The earth magnetic field strength is
The mass of electron is
The charge of electron is
The acceleration due to gravity is
Calculation:
Sketch the direction as shown in Figure 1.
The equation of magnetic force must be equal in magnitude to the weight of the electron is,
The magnetic force must point upwards , and so by the right hand rule and the negative charge of the electron, the electron must be moving west.
Conclusion:
Therefore, the velocity of an electron is
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Physics: Principles with Applications
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