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 0 lying at distance L from the end A is

`Q/(8piin_0L)`

`3Q/(4piin_0L)`

`3Q/(4piin_0ln2)`

`(QIn2)/(4piin_0L)`

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