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Question
An electron of mass m and charge e is accelerated from rest through a potential difference v in vacuum. What speed will it acquire?
An electron of mass m and charge e is accelerated from rest through a potential difference v in vacuum. What speed will it acquire?
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Solution
Work done = e×V (e - charge on electron, V - potential difference)
Since this work is stored in the form of Kinetic energy ,
1/2 mv2= eV
Therefore v = [(2×e×V)÷m]^½
Like if satisfied
Work done = e×V (e - charge on electron, V - potential difference)
Since this work is stored in the form of Kinetic energy ,
1/2 mv2= eV
Therefore v = [(2×e×V)÷m]^½
Like if satisfied
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