Answered: An electron with an initial speed of…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter20: Electric Potential And Capacitance

Section: Chapter Questions

Problem 5OQ

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An electron with an initial speed of 300,000 m/s is brought to rest by an electric field. What is the potential difference that stopped the electron? What was the initial kinetic energy of the electron, in electron volts?

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$G i v e n D a t a : i n i t i a l s p e e d o f t h e e l e c t r o n u = 300000 m / s = 3 \times 10^{5} m / s f i n a l s p e e d o f t h e e l e c t r o n v = 0 m / s m a s s o f t h e e l e c t r o n m = 9.1 \times 10^{- 31} k g c h a r g e o n e l e c t r o n q = 1.6 \times 10^{- 19} C L e t V d e n o t e s t h e p o t e n t i a l d i f f e r e n c e t h a t s t o p p e d t h e e l c t r o n$

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