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A current of 5A passes through a long wire. Find the position of the point where it produces a magnetic field of induction0.36xx10^(-4)(Wb)//m^2 [mu_@=4pixx10^(-7) (Wb)//Am] DATA:i=5A, B=0.36xx10^(-4)(Wb)//m^2 mu_@=4pixx10^(-7) (Wb)//A To find:r=? |
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Answer» Solution :Magnetic field B NEAR an INFINITELY long conductor `B=mu_@/(4pi)XX(2i)/r` `r=mu_@/(4pi)xx(2i)/B` `r=10^(-7)xx(2xx5)/(0.36xx10^(-4))=0.0278m=2.78cm` |
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