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Home  >>  AIMS  >>  Class12  >>  Physics  >>  Electric Charges and Fields

A thin semi-circular ring of radius r has a positive charge q distributed uniformly over it. The net field E at the centre O is

1 Answer

$(C) \large\frac{-q}{2 \pi ^2 \in_0 r^2} \hat i$
Hence C is the correct answer.
answered Jun 6, 2014 by meena.p
 
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