An Electron Is Released from Rest at the Negative Plate

question 1

Multiple Choice

An electron is released from rest at the negative plate of a parallel-plate capacitor. If the distance across the plates is 5.0 mm and the potential difference across the plates is 20 V, with what velocity does the electron hit the positive plate? (m_e = 9.1 * 10 ^{- 31} kg, e = 1.6 *10 ^{- 19} C)

• A) 1.3 * 10⁶ m/s
• B) 1.0 * 10⁶ m/s
• C) 2.7 *10⁶ m/s
• D) 5.3 * 10⁶ m/s

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