A charge Q is uniformly distributed over...

A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The electric potential at the point O lying at distance L from the end A is

`Q/(8 pi epsilon_0L)`

`(3Q)/(4 pi epsilon_0L)`

`(Q)/(4 pi epsilon_0Lln2)`

`(Qln2)/(4 pi epsilon_0L)`

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