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A large flat metal surface has a uniform...

A large flat metal surface has a uniform charge density `+sigma`. An electron of mass `m` and charge `u` and returns to it at point `B`. Disregard gravity . The maximum value of `AB` is

A

`(u^(2)m epsilon_(0))/(sigma e)`

B

`(u^(2)e epsilon_(0))/(m sigma)`

C

`(u^(2)e)/(epsilon_(0)sigmam)`

D

`(u^(2) sigma e)/(epsilon_(0)m)`

Text Solution

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The correct Answer is:
A
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