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Question
An electron at rest is accelerated by a potential 'V1', in uniform field experiences a force 'F1'· When potential is changed to 'V2', the force experienced by the electron gets doubled. The ratio of V1 to V2 is ______.
Options
1 : 4
4 : 1
1 : 2
2 : 1
MCQ
Fill in the Blanks
Solution
An electron at rest is accelerated by a potential 'V1', in uniform field experiences a force 'F1'· When potential is changed to 'V2', the force experienced by the electron gets doubled. The ratio of V1 to V2 is 1 : 2.
Explanation:
`"F"_1 = "eV"_1/"d" 2"F"_1 = "eV"_2/"d"`
`"V"_1/"V"_2 = 1/2`
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Electric Field
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