Question

An electron is liberated from the lower of the two large parallel metal plates separated by a distance of 20mm. The upper plate has a potential of 2400V

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Answer 1

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Answer 2

Here V=2400V,d=20mm=0.02m

em=1.8×1011Ckg−1

the upward force on the electron exerted by the electric field is

F=eE=eVd

∴ Acceleration,

a=Fm=eVmd=1.8×1011×24000.02ms−2

=2.16×1016