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Imo
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Finite Number of Charges around a regular Polygon
I know this is probably an easy one, but I'm just unsure...
There are 13 equal charges, q, that are placed at the corners of a regular 13-sided polygon.
a) What is the Force on a test charge Q at the centre?
What I've been donig is simply saying that all but three of the charges will cancel with the remaining three charges having a Y shape. then here, the total force F =2Fcos(theta) -F and then calculated theta as 2pi/13 (F is the force of one point charge).
Is this right? it seems very complicated for what at first glance seems like a simple question.
b) If one of the 13 charges is removed, what is the force on Q?
In this case I have: F=Fcos[theta] - F. Again, this just doesn't "feel" right.
Can anyone help?
I know this is probably an easy one, but I'm just unsure...
There are 13 equal charges, q, that are placed at the corners of a regular 13-sided polygon.
a) What is the Force on a test charge Q at the centre?
What I've been donig is simply saying that all but three of the charges will cancel with the remaining three charges having a Y shape. then here, the total force F =2Fcos(theta) -F and then calculated theta as 2pi/13 (F is the force of one point charge).
Is this right? it seems very complicated for what at first glance seems like a simple question.
b) If one of the 13 charges is removed, what is the force on Q?
In this case I have: F=Fcos[theta] - F. Again, this just doesn't "feel" right.
Can anyone help?
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