Questions
An electron of mass m and charge e is accelerated from rest through a potential difference Vin vacuum. The final speed of the electron will be
a
Ve/m
b
eV/m
c
2eV/m
d
2eV/m
detailed solution
Correct option is C
Kinetic energy K=12mv2=eV⇒v=2eVmTalk to our academic expert!
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Kinetic energy of an electron accelerated through a potential difference of 100 V is
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