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Homework Statement
Homework Equations
The Attempt at a Solution
KEi + PEi = KEf
2.4 x 10-19 + e(1) = KEf
KEf = 4.002 x 10-19 J
So option c would be correct, right? Thank you in advance.
Determing the kinetic energy of an electron
- Thread starter Turion
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KEi + PEi = KEf
2.4 x 10-19 + e(1) = KEf
KEf = 4.002 x 10-19 J
So option c would be correct, right? Thank you in advance.
- #2
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- 2
This one is a trick question, right? It would need 0 kinetic energy because the electric field itself would move the electron to the left until it reaches point C.
- #3
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This one doesn't even make sense to me. How can the electron go back to plate D if plate D has the higher voltage?
- #4
nasu
Homework Helper
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Turion said:Homework Statement
Homework Equations
The Attempt at a Solution
KEi + PEi = KEf
2.4 x 10-19 + e(1) = KEf
KEf = 4.002 x 10-19 J
So option c would be correct, right? Thank you in advance.
No. The electron is repelled by the negative plate so its KE decreases when it moves from B to A.
And it's easier if you work in eV directly.
The potential difference between B and A is 1 V so the change in potential energy is 1eV.
And I think you are supposed to post one problem per topic.