Application of gauss law

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Homework Statement


A circular ring of radius a carries a uniform charge q C/m and is placed on x-y plane with axis same as z axis. To determine E at P(0,0,h). My ques is can't we apply gauss theorem? if yes then what will be the gaussian surface? if no then why not?


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Answers and Replies

  • #2
Doc Al
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Gauss's law won't help you because there isn't enough symmetry. Gauss's law helps when you can claim that the field is uniform over a surface--that's not the case here.

You'll have to use brute force and integrate.
 

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