InterviewSolution
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InterviewSolution
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A ring of radius `R` is placed in the plane with its centre at origin and its axis along the `x-axis` and having uniformly distributed positive charge.A ring of radius `r( ltlt R)` and coaxial with the larger ring is moving along the axis with constant velocity then the variation of electrical flux `(phi)` passing through the smaller ring with position will be best represented by : A. B. C. D. |
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Answer» Correct Answer - C `f=vec(E),vec(ds)` since `r lt lt R` so we can consider electric field is constant throughout the surface of smaller ring. hence `f=E prop(x)/((R^(2)+x^(2))^(3//2))` |
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