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A 2A current is flowing through a circul...

A 2A current is flowing through a circular coil of radius 10 cm containing 100 turns. Find the magnetic flux density at the centre of the coil.

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Given i = 2A , r =10 cm ` = 10 xx 10^(-2) m , N = 100`
Flux density at the centre of .N. turn coil is given by,
`B = N (mu_0i)/(2r) = 100 xx (2pi xx 10^7 xx 2)/(10 xx 10^(-2))`
`= 1.26 xx 10^(-3) Wb//m^2`
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