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.An electron is projected from plate A,directly toward plate B,with an initial velocity of v0 = 1.0 × 107 m/s,as shown in the figure.(e = 1.60 × 10-19 C,
Ε0 = 8.85 × 10-12 C2/N • m2,mel = 9.11 × 10-31 kg) The distance of closest approach of the electron to plate B is nearest to
A) 16 mm.
B) 18 mm.
C) 20 mm.
D) 22 mm.
E) 24 mm.
Correct Answer:
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