Concept explainers
Path of electron when it is projected vertically upward in uniform magnetic field which is directed horizontally.
Answer to Problem 10P
Solution:
The path of electron is circular.
Explanation of Solution
Given:
Charge q = +e; mass kg; velocity m/s; Magnetic field T
Since an electron is projected vertically upwards and magnetic field is in horizontal direction. This implies that magnetic field and direction of velocity both gets perpendicular to each other.
So direction of force by Fleming’s Left Hand Rule is always found perpendicular to velocity which shows that electron will move in circular path and necessary
in such a way that,
Magnetic Lorentz force= Centripetal Force
This implies
m
Chapter 20 Solutions
Physics: Principles with Applications
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