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Consider three long straight parallel wi...

Consider three long straight parallel wire as shown in figure. Find the force experienced by a `25 cm` length of wire `C`.

Text Solution

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Repulsion by wire `D`,[towards right]
`F_1=mu_0/(2pi) (i_1i_2l)/r`
`=((2xx10^-7)(30xx10))/(3xx10^I-2)(0.25)`
`=5xx10^-4N`
Repulsion by wire G
`F_2=((2xx10^-7)(20xx10))/((5xx0^-2)(0.25)` [towards left]
`=2xx10^-4N`
`F_(net)=F_1-F_2`
`=3xx10^-4N` [towards right]
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