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hoseA
Feb20-06, 08:01 PM
http://img69.imageshack.us/img69/6329/potential4iu.png (http://imageshack.us)

i thought the electric potenial would be larger at Va than at V0.

Va>V0

Apparently I'm wrong. I thought since R=0 at the origin the electric potential would also be zero. Is that not the case?

Can the electric potential even be determined?

Or am i mixing it up with electric potential energy?
phucnv87
Feb20-06, 09:29 PM
In the picture you attached, I think that the electric field is uniform
hoseA
Feb20-06, 09:35 PM
In the picture you attached, I think that the electric field is uniform

How do u arrive at this conclusion?
phucnv87
Feb20-06, 09:41 PM
Because the lines of electric force are parallel
hoseA
Feb20-06, 09:49 PM
Because the lines of electric force are parallel

=( apparently that's incorrect. It's either V0>VA or "cannot be determined"

I really need to get the answer right... since it's a multiple choice question -- -6.67 is my current score(negative)... if it's right i'll get -3.33 or -10 if it's wrong.
phucnv87
Feb20-06, 10:08 PM
As the picture shows, we have V_0>V_A and because we don't know V_A, so we can calculate V_0. If we know V_A we can calculate V_0 by this method V_0=V_A+Ex where x is the position of point A in the x-axis.
hoseA
Feb20-06, 10:27 PM
As the picture shows, we have V_0>V_A and because we don't know V_A, so we can calculate V_0. If we know V_A we can calculate V_0 by this method V_0=V_A+Ex where x is the position of point A in the x-axis.
Thanks. That helps. :approve: