Concept explainers
To Estimate: The value of electric field.
Answer to Problem 53P
Explanation of Solution
Given:
The electrons are accelerated by
Formula used:
The potential energy is given by
Where,
e is the charge on electron.
V is the voltage applied.
The kinetic energy is given by
Where,
m is the mass of the electron.
v is the velocity of the electron.
The force is given as
Where,
a is the acceleration of the electron.
E is the electric field applied.
The time taken to travel the distance is
Where,
s is the horizontal distance covered by the electron.
v is the speed of electron.
The vertical displacement of the electron is
Where,
vi is the initial velocity of the electron
t is the time taken.
a is the acceleration.
d is the displacement of the electron.
Calculation:
The final velocity can be given as:
Using the law of conservation of energy,
Also,
But,
Hence,
Substituting all the values,
Conclusion:
The required values is
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Physics: Principles with Applications
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