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Eight wires cut the page perpendicularly at the points shown. Each wire carries current i_0. Odd currents are out of the page and even currents into the page. Find the line intergal ointvec B.vec(dl)along the loop. |
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Answer» Solution :Acoording to ampere.s circuital law `OINT VEC(B). vec(DL) = mu_0 i ` ENCLOSED `oint vec(B).vec(dl) = mu_0[i_0 - i_0 + i_0 + i_0]` `oint vec(B).vec(dl) = 2mu_0i_0` |
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