
Concept explainers
(a)
What is the direction and magnitude of the change in velocity of electrons between plates.
(a)

Answer to Problem 109P
The magnitude of the change in velocity is
Explanation of Solution
Write newton’s equation to find the force acting on the electrons.
Here,
Write the equation to find the force due to electric field.
Here,
Equate equations (I) and (II) and get an equation for
Write the equation to find the time of travel of charge.
Here,
Write the equation to find the change in velocity.
Conclusion
Substitute
Therefore, the magnitude of the change in velocity is
(b)
How far are the electrons deflected in the
(b)

Answer to Problem 109P
Electrons get deflected to a distance of
Explanation of Solution
Write the equation to find the displacement of electrons.
Substitute equation (III) and (IV) in equation (VI) to get
Conclusion:
Substitute
Therefore, electrons get deflected to a distance of
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Chapter 17 Solutions
Physics
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