An electron moves from the cathode of a lamp diode to its anode. Determine the force acting
| June 21, 2021 | education
An electron moves from the cathode of a lamp diode to its anode. Determine the force acting on the electron if the distance between the anode and the akatode is 10 mm, and the voltage between them is 440 V.
Uniform electric field strength:
E = U / d, where U is the potential difference between the surfaces of the anode and cathode, d is the distance between the anode and cathode.
The force with which the electric field acts on the electron (directed towards the anode):
F = Еe, where e is the electron charge.
F = Ue / d = 440 V * 1.602 * 10 ^ (- 19) C / 0.01 m = 7.04 * 10 ^ -15 N.
Answer: 7.04 * 10 ^ -15 N.
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