[CHM 331] Another question

[Andrew J. Pounds]

On 01/21/2017 04:41 PM, Kathryn Elizabeth Morris wrote:
>
> This is Katie in your CHM 331 class. I have one last question about 
> part c in the homework. How would I start off finding the magnitude 
> and direction of the vectors at the origin if the origin does not have 
> a point charge?
>
> Thanks,
>
> Katie
>

You can calculate the magnitude and direction of the electric at any 
point in space resulting from the proximity to a point charge.

For example, if you had a charge $q$ at (1,0), the magnitude felt at 
(3,0) would be

$E = \frac{1}{4 \pi \epsilon_0}\frac{q}{r^2}=\frac{1}{4 \pi 
\epsilon_0}\frac{q}{(3-1)^2}$

Since $q$ is positive the direction of the field would be along the 
positive $x$-axis.   In this case of multiple charge you would simply 
have to vectorially add the individual fields.


-- 
Andrew J. Pounds, Ph.D.  (pounds_aj at mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627
http://faculty.mercer.edu/pounds_aj

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