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A regular polygon of n sides is formed b...

A regular polygon of `n` sides is formed by bending a wire of length `L` which carries if the magnetic field `B` at the centre of the polygon `(mu_(0)"in"^(2)sin_(n)^(pi)tan_(n)^(pi))/(NpiL)`, then find the value of `N`

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Verified by Experts

The correct Answer is:
`1`
`B=nxx(mu_(0)i2cos alpha)/(4pi1/2tan alpha)=(nmu_(0)icos alpha)/(pil tan alpha)`
`alpha=pi/2-pi/n`
`=(u_(0)"in"^(2)sinpi/ntan pi/n)/(piL)`
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