-A Pair of Charged Conducting Plates Produces a Uniform Field

Multiple Choice

-A pair of charged conducting plates produces a uniform field of 12,000 N/C,directed to the right,between the plates.The separation of the plates is 40 mm.In the figure,an electron is projected from plate A,directly toward plate B,with an initial velocity of vo = 2.0 × 10⁷ m/s.The velocity of the electron as it strikes plate B is closest to:

A) 1.2 × 10⁷ m/s
B) 1.5 × 10⁷ m/s
C) 1.8 × 10⁷ m/s
D) 2.1 × 10⁷ m/s
E) 2.4 × 10⁷ m/s