A Pair of Charged Conducting Plates Produces a Uniform Field

question 247

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.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,m_el = 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.

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