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mmoadi
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Homework Statement
Electrons, which evaporated from the filament accelerated in homogeneous electric field that was created by using two parallel metal plates, connected to the voltage
V = 1 kV. The resulting stream of electrons is deviated from the initial direction for a
φ = 15 ° in electrical field between two parallel flat surfaces. The length of the plate, in the direction of the initial movement of electrons, is s = 10 cm and the distance between the plates is d = 2 cm. What is the voltage V' between the two plates?
Homework Equations
E= V/d
ΔV= V’ – V
ΔV= -E*d*cos φ
The Attempt at a Solution
E= V/d
E= 1000 v/ 0.02 m
E= 50000 V/m
ΔV= -E*d*cos φ
V’ – V= -E*d*cos φ
V’ – 1000 V= -50000 V/m*0.02m*cos15º
V’= -965.9 V – 1000 V
V’= 34.1 V
Are my calculations correct?
Thank you for helping!