An infinite number of charges, each equa...

An infinite number of charges, each equal to q are arranged in a line at distance 1,2,4,8,16,…..from a fixed point on the line. Find the potential and field at that fixed point. What will be the potential and electric field if, in the above set up, the consecutive charges have opposite signs?

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The correct Answer is:

`q/(2piepsilon_(0)),q/(3piepsilon_(0)),q/(6piepsilon_(0)),q/(5piepsilon_(0))`

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