A point charge of is fixed at A and another of at B

PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential

Problem

A point charge of −2 μC-2\,\mu\text{C} is fixed at A and another of +8 μC+8\,\mu\text{C} at B, the two charges being 40 cm apart in air. (i) On which side of A does the point of zero electric field lie? (ii) Calculate the distance of this point from A.

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