A point charge of +10 µC is located at x = −2 cm and a second point charge of −10 µC is located at x = 8 cm. Where should a third charge of +2 µC be placed so that the electric field at x = 0 cm is zero? Answer in units of cm

Where should a third charge of +2 µC be placed = 0.867cm

Explanation:

The concept of Coulomb's law was applied in solving the problem, electric field due to each charges was calculated, the net electric field was also gotten and appropriate substitution was done as shown in the attached files.

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