An Electron Is Released from Rest at the Negative Plate

Multiple Choice

An electron is released from rest at the negative plate of a parallel-plate capacitor.If the distance across the plate is 6.0 mm and the potential difference across the plate is 4.0 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) 1.4 × 10⁵ m/s
B) 1.7 × 10⁶ m/s
C) 2.4 × 10⁶ m/s
D) 1.2 × 10⁶ m/s
E) 1.2 × 10⁵ m/s