Two point charges 4 mu C and -2 mu C are...

Two point charges `4 mu C and -2 mu C` are separated by a distance of 1m in air. Calculate at what point on the line joining the two charges is the electric potential zero ?

` 9axx10^-3` V

`axx10^-3` V

`3axx10^-9` V

`3axx10^-3` V

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