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Two long and parallel straight wires A and B carrying currents of `8*0A` and `5*0A` in the same direction are separated by a distance of `4*0cm`. Estimate the force on a `10cm` section of wire A. |
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Answer» Here, `I_1=8*0A`, `I_2=5*0A`, `r=4*0xx10^-2m`, `l=10cm=0*1m`, `F=?` `F=(mu_0)/(4pi)(2I_1I_2)/(r)l=10^-7xx(2xx8xx5xx0*1)/((4*0xx10^-2))=2xx10^-5N` This force is attractive force normal to A towards B. |
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