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# A transmission line carries a current of 100A. What would be the magnetic field B at a point on the road if the wire is 8m above the road?

Khimraj
3007 Points
2 years ago
B = uoI/2$\pi a$ = (uo/4$\pi$)(2I/a) = 10-7*2*100/8 = 2.5$\mu T$
Hope it clears. If you like answer then please approve it.