I had a question (very similar to this) for homework a few days ago, which was basically: In which arrangement will the electric field at the leftmost point be largest and in which will it be the smallest?(adsbygoogle = window.adsbygoogle || []).push({});

A.

(+)-------(+)

B.

--------(+)-------(+)

or

C.

----(+)---(+)

I assumed it would be A since the point charge is AT the leftmost point, and through the method that acts like there is a positive charge at a point to estimate the direction and magnitude of the electric field, I got the magnitude of the electric field at that point to be infinite since it is at the same point as the charge. (r^{2}in denominator becomes zero) What am I doing wrong?

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# Homework Help: Electric field at a point charge

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