Two electric charges 12 mu C and -6 mu C...

Two electric charges `12 mu C` and `-6 mu C` are placed `20 cm` apart in air. There will be a point `P` on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of `P` from `6 mu C` chrage is

0.10 m

0.15 m

0.20 m

0.25 m

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