An electron is released from rest in a vacuum between two flat, parallel metal plates that are apart and are maintained at a constant electric potential difference of Volts. If the electron is released at the negative plate, what is its speed just before it strikes the positive plate?

Question

Irvin

Physics

18 December, 20:12

An electron is released from rest in a vacuum between two flat, parallel metal plates that are apart and are maintained at a constant electric potential difference of Volts. If the electron is released at the negative plate, what is its speed just before it strikes the positive plate?

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Answers (1)

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Sanai Jarvis · Answer 1

v = √ (2qV/m)

Explanation:

½mv² = qV

mv² = 2qV

v² = 2qV/m

v = √ (2qV/m)

where v = drift velocity

q = charge

V = p. d

m = mass of the electron