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3. You have two charges, +Q and-Q that are located on the x-axis, at equal distances on either side of the origin. You look at a point on the y-axis, as indicated by the black dot. Which vector best represents the direction of the electric field at that point? A) Vector EA B) Vector EB C) Vector Ec D) The electric field at that point is zero E) The electric field is opposite to EB.

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Answer #1

A)Vector Eb

The field due to +Q will be in right, that due to -Q will be in left, so the resusltant field would point in between them, due to symmetry and same magnitude of distance and charges, it will point in the direction indicated by vector Eb.

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