Charge Q is uniformly distributed on a d...

Charge Q is uniformly distributed on a dielectric rod AB of length `2l`. The potential at P shown in the figure is equal to

`Q/(4pi epsi_(0) (2l))`

`(Q)/(4pi epsi_(0) (l)) ln 2`

`(Q)/(4pi epsi_(0) (2l)) ln 3`

None of these

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