Charge in an Electric Field: An electron is projected with an initial velocity v0 = 8.4 × 107 m/s along the y-axis, which is the centerline between a pair of charged plates, as shown in the figure. The plates are 1.0 m long and are separated by 0.10 m. A uniform electric field of magnitude E in the +x-direction is present between the plates. If the magnitude of the acceleration of the electron is measured to be 8.9 × 1015 m/s2, what is the magnitude of the electric field between the plates? (e = 1.6 × 10-19 C, melectron = 9.11 × 10-31 kg) 

A. 51,000 N/C
B. 45,000 N/C
C. 40,000 N/C
D. 35,000 N/C
E. 29,000 N/C


Answer: A

Physics & Space Science

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