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A current I flows in a long single lay...

A current `I` flows in a long single layer solenoid with cross-sectional radius `R`. The number of turns per unit length of the solenoid equals `n`. Find the limiting current at which the winding may ruputure if the tensile strength of the wire is equal to `F_(l i m)`.

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The correct Answer is:
`I=sqrt((2sigma)/(mu_(0)nR))`
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