InterviewSolution
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InterviewSolution
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Magnetic field due to a ring having n turns at a distance `x` on its axis is proportional to (if `r =` radius of ring)A. `(r)/((x^(2)+r^(2))`B. `(r)/((x^(2)+r^(2))^(3//2))`C. `(nr^(2))/((x^(2)+r^(2))^(3//2))`D. `(n^(2)r^(2))/((x^(2)+r^(2))^(3//2))` |
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Answer» Correct Answer - C Magnetic field due to a circular coil having n turns at a distance x on its axis is give by `B=(mu_(0))/(4pi)*(2pi n ir^(2))/((x^(2)+r^(2))^(3//2))` `:. B prop=(nr^(2))/((x^(2)+r^(2))^(3//2))` |
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