A wire of length 3 cm has current 1 amp....

A wire of length 3 cm has current 1 amp. Find magnetic field at a perpendicular distance a cm from centre of wire

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`B=(mu_(0)1)/(4pid)[sin phi_(1)+sin phi_(2)],phi_(1)=phi_(2)=phi`
`B=(mu_(0)I)/(2pid). sin phi`
`B=(4pixx10^(-7))/(2pi xx10^(-2))(1.5)/(sqrt(3.25))`
`B=1.67 xx10^(-5)T`

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