Question: Two very large horizontal parallel plates are separated by 1.50 cm. An electron is to be suspended at rest in midair between them. (a) The

Two very large horizontal parallel plates are separated by 1.50 cm. An electron is to be suspended at rest in midair between them.
(a) The top plate should be at (1) a higher potential, (2) an equal potential, (3) a lower potential compared with the bottom plate. Explain.
(b) What voltage across the plates is required?
(c) Does the electron have to be positioned midway between the plates, or is any location between the plates just as good?

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