An electron is released from rest in a uniform electric field. If the electric field is 1.25 kN/C, at the end of 20 ns the electron's velocity will be approximately

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The force on the electron is given by F = eE, where e is the charge of the electron (1.6 × 10^-19 C) and E is the electric field (1.25 × 10^3 N/C). The acceleration a = F/m, where m is the mass of the electron (9.11 × 10^-31 kg). Using the equation v = at, where t = 20 ns = 20 × 10^-9 s, we find the velocity v ≈ 4.4 × 10^6 m/s.

An Electron Is Released from Rest in a Uniform Electric