1.

A thread carrying a unifrom charge lambda per unit length has the configuraations shown in a) and (b). Assuming a curvature radius R to be considerably less than length of the thread find the magnitude of the electric field strenght at the point O.

Answer»

`(lambdasqrt(2))/(4piepsilon_(0)R),0`
`(lambdasqrt(3))/(4piepsilon_(0)R).(lambdasqrt(2))/(4piepsilon_(0)R)`
`(LAMBDA)/(4piepsilon_(0)R),0`
`(lambdasqrt(5))/(4piepsilon_(0)R).(lambdasqrt( 3))/(4piepsilon_(0)R)`

Answer :A


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