Two point charges are separated by 12.0 cm and have charges of +5.0 µC and −5.0 µC,respectively.What is the electric field at a point midway between the two charges? (k_e = 8.99 × 10⁹ N·m²/C²) A)3.7 × 10⁶ N/C B)2.5 × 10⁷ N/C C)3.1 × 10⁶ N/C D)2.1 × 10⁸ N/C E)zero

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Quizplus · Accepted Answer

The electric field due to each charge at the midpoint is equal in magnitude but opposite in direction. The fields add up because they are in the same direction (towards the negative charge). The magnitude of the electric field due to one charge is E = k * |q| / (r^2), where r = 0.06 m. Calculating gives E = 2.5 × 10^7 N/C.

Two Point Charges Are Separated by 12