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Calculate the force per unit length on a...

Calculate the force per unit length on a long straight wire carrying current of 4A due to a parallel wire carrying 6 A current if the distance between the wire is 3cm .

Text Solution

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`I_(1) = 4A, I_(2) = 6A, r = 3 cm = 0.03 A`
` F/l = (mu_(0))/(4 pi) (2I_(1)I_(2))/r `
`F/1 = (10^(-7) xx 2 xx 4 xx 6)/ (0.03)`
` F = 1.6 xx 10^(-4) ` N/m .
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