An electron of charge e is introduced between two metal plates a distance d apart. A potential difference V is applied to the plates as shown in the diagram.Which expression gives the electric force F on the electron?
Correct answer: A. eV/d
- A. eV/d
- B. eVd
- C. V/ed
- D. dV/e
Explanation
The electric field E between parallel plates is V/d. The force on a charge q in an electric field E is given by F = qE, so for an electron with charge e, F = eE = eV/d.
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