Two point charges \( 4 \mu \mathrm{C} \) and \( -2 \mu \mathrm{C} \) are separated by a distance...

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Two point charges \( 4 \mu \mathrm{C} \) and \( -2 \mu \mathrm{C} \) are separated by a distance of \( 1 \mathrm{~m} \) in air. Calculate at what point on the line joining the two charges is the electric potential zero.
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