An electron moving at 20 km s- enters a uniform electric field of magnitude 500 V m- in the direction of its velocity. 21 a What is the kinetic energy of the electron? b Use an energy approach to calculate the distance it takes for the electron to come to a stop. c What is the potential difference between the initial point at which the electron entered the field and the point at which it comes to a stop?
An electron moving at 20 km s- enters a uniform electric field of magnitude 500 V m- in the direction of its velocity. 21 a What is the kinetic energy of the electron? b Use an energy approach to calculate the distance it takes for the electron to come to a stop. c What is the potential difference between the initial point at which the electron entered the field and the point at which it comes to a stop?
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PART C ONLY
Transcribed Image Text:An electron moving at 20 km s- enters a uniform electric
field of magnitude 500 V m- in the direction of its
velocity.
21
a What is the kinetic energy of the electron?
b Use an energy approach to calculate the distance it
takes for the electron to come to a stop.
c What is the potential difference between the initial
point at which the electron entered the field and the
point at which it comes to a stop?
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