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Two semicircular rings lying in same pla...

Two semicircular rings lying in same plane, of uniform linear charge density `lambda` have radius r and 2r. They are joined using two straight uniformly charged wires of linear charge density `lambda` and length r as shown in figure. The magnitude of electric field at common centre of semi circular rings is -

A

`(1)/(4piepsilon_(0))(3lambda)/(2r)`

B

`(1)/(4piepsilon_(0))(lambda)/(2r)`

C

`(1)/(4piepsilon_(0))(2lambda)/(r)`

D

`(1)/(4piepsilon_(0))(lambda)/(r)`

Text Solution

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The correct Answer is:
D
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