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Two Large Conducting Parallel Plates a and B Are Separated

question 31

Multiple Choice

Two large conducting parallel plates A and B are separated by 2.4 m. A uniform field of 1500 V/m, in the positive x-direction, is produced by charges on the plates. The center plane at x = 0.00 m is an equipotential surface on which V = 0. An electron is projected from x = 0.00 m, with an initial velocity of 1.0 × 107 m/s perpendicular to the plates in the positive x-direction, as shown in the figure. What is the kinetic energy of the electron as it reaches plate A?
(e = 1.60 × 10-19 C, mel = 9.11 × 10-31 kg) Two large conducting parallel plates A and B are separated by 2.4 m. A uniform field of 1500 V/m, in the positive x-direction, is produced by charges on the plates. The center plane at x = 0.00 m is an equipotential surface on which V = 0. An electron is projected from x = 0.00 m, with an initial velocity of 1.0 × 10<sup>7</sup> m/s perpendicular to the plates in the positive x-direction, as shown in the figure. What is the kinetic energy of the electron as it reaches plate A? (e = 1.60 × 10<sup>-19</sup> C, m<sub>el </sub>= 9.11 × 10<sup>-31</sup> kg)    A)  +2.4 × 10<sup>-16</sup> J B)  +3.3 × 10<sup>-16</sup> J C)  -2.4 × 10<sup>-16</sup> J D)  -2.9 × 10<sup>-16</sup> J E)  -3.3 × 10<sup>-16</sup> J


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