Consider N equal point charges evenly spaced on an imaginary circle of radius R. What is the electric field at the center of the circle? The answer is obviously zero, when N is even. What if N is odd (3,5,7,...)? Explain your reasoning.

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Consider N equal point charges evenly spaced on an imaginary circle of radius R.
What is the electric field at the center of the circle? The answer is obviously zero,
when N is even. What if N is odd (3,5,7,...)? Explain your reasoning.
Transcribed Image Text:Consider N equal point charges evenly spaced on an imaginary circle of radius R. What is the electric field at the center of the circle? The answer is obviously zero, when N is even. What if N is odd (3,5,7,...)? Explain your reasoning.
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