What is the electric field of this dipole at a point that lies at x=1.0 m along the x axis?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter19: Electric Forces And Electric Fields
Section: Chapter Questions
Problem 56P
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A dipole is aligned along the x axis and centred on the origin. The negative component of the dipole is at x−=−1.0μm and the positive component is at x+=+1.0μm. The magnitude of the charge on each component of the dipole is 1.5μC, but one is positive, one negative. What is the electric field of this dipole at a point that lies at x=1.0 m along the x axis? Use the principle of superposition to determine the electric field on the x axis, as the dipole approximation is not as accurate along the direction of the dipole moment. (It is accurate in the perpendicular direction.)

 

A: 0.054i N/C

B: 240i N/C

C: -0.054i N/C

D: 240i N

E: -240i N

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