8) Ch 19 (4 pts) An electron is projected with an initial velocity vo-6.8 × 107

Question

8) Ch 19 (4 pts) An electron is projected with an initial velocity vo-6.8 × 107 m/s along the y-axis, which is the center line between a pair of charged plates. The plates are 1.00 m long and are separated by 0.10 m. A uniform electric field E, in the positive x-direction, is presented between the plates. The magnitude ortheacceleration of the electron is 9.9 × 1015 m/s2 (q=-1.6 x 10-19 C, Melectron = 9.11× 10-31 kg) In the figure, what is the magnitude of the electric field between the plates? I E 1% 0.10 m A) 56,000 N/C B) 33,000 N/C 50,000 N/C 45,000 N/C E) 39,000 N/C m c 2(.05 )(4.11x10-29 6-1,bx10(.068 x10"),

Explanation / Answer

F = qE

ma = qE

E = ma / q

E = (9.11 x 10^-31 x 9.9 x 10^15 m/s^2) / (1.6 x 10^-19 C)

E = 56368 N/C

Ans (A)

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