A power line 10 meter high carries a current 200 amperes .Find the magnetic field of the wire at ground?

Answers

Answered by bobpursley
Wonder where the return current is flowing? Ground?

Ok, assuming power can be transmitted by only one wire, then Ampere's law applies

INT B.ds=mu*I
B*2Pi*10=mu*200
solve for B
Answered by Tauqeer
4*10^-6
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