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A current - carrying circular coil of 100 turns and radius 5.0 cm produces a magnetic field of `(6.0 xx 10 ^-5)` T at its centre. Find the value of the current.

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`B=(mu_0ni)/(2R)`
`6.0xx10^(-7) = (4pixx10^(-7)xx10^2xxxi)/(2xx5xx10^(-2)`
`I = (60xx10^(-7)/(4pixx10^(-7)xx10^2A)`
`=4.777xx10^(-2)A`
`=47.77xx10^(-3) A ~~ 48 mA`
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