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A charge q is uniformly distributed over...

A charge `q` is uniformly distributed over a quarter circular ring of radius `r`. The magnitude of electric field strength at the centre of the ring will be

A

`(sqrt2q)/(πvarepsilon_0r^2)`

B

`q/(4πvarepsilon_0r^2)`

C

`q/(sqrt2π^2varepsilon_0r^2)`

D

`q/(π^2varepsilon_0r^2)`

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