A point charge $$\(-q\)$$ is released from rest at the center of a parallel plate capacitor, as shown. Note that the plates have small holes that allow the charge to exit the capacitor. Which of the following statements describes the charge's behavior a long time after it exits the capacitor?
A.
It is moving to the right with a kinetic energy of \(\mathrm{KE}=q V\).
B.
It is moving to the left with a kinetic energy of \(\mathrm{KE}=q V\).
C.
It is moving to the right with a kinetic energy of \(\mathrm{KE}=q V / 2\).
D.
It is moving to the left with a kinetic energy of \(\mathrm{KE}=q \mathrm{~V} / 2\).
E.
It never reaches a constant velocity but instead continually oscillates in and out of the capacitor.
Exam No：AP Physics C(EM) Practice Test Year：2024 Question No：APPhysicsCEM2024AP0076
Answer:
D
Knowledge points:
1.2 Electrostatics: Electric Field and Electric Potential
Solution:
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