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April 16, 2014

April 16, 2014

Posted by **Julia** on Thursday, February 11, 2010 at 8:29pm.

Consider the limit of large distances, where a finite charged rod is observed at a distance that is very large when compared to the length of the rod.

In this situation, the electric field best resembled that of a ...

a)point charge ... it goes like r-2

b) infinite line ... it goes like r-1

c) electric dipole ... it goes like r-3

d) infinite plane ... it is constant

none of the above ... it is zero

- Physics -
**drwls**, Thursday, February 11, 2010 at 9:21pmThe finite rod of length L and charge Q looks more like a point source as the observer gets farther way.

The answer is a)

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