Currents in DC transmission lines can be 100 A or more. Some people have express

Question

Currents in DC transmission lines can be 100 A or more. Some people have expressed concern that the electromagnetic fields (EMFs) from such lines near their homes could cause health dangers. Then use your estimate to calculate the strength of the magnetic field these lines produce at ground level. Express your answer in teslas and as a percent of the earth's magnetic field (which is 0.500 gauss ).

Assume that the lines are 10 m off the ground. Use this assumtion to calculate the strength of the magnetic field these lines produce at ground level. Express your answer in teslas.

Assume that the lines are 10 m off the ground. Use this assumtion to calculate the strength of the magnetic field these lines produce at ground level. Express your answer as a percent of the earth's magnetic field (which is 0.500 gauss ).

Does it seem that there is cause for worry?

Please provide numerical answers fo part one and part two!!!

Explanation / Answer

magnetic field streanth B=mi/2r here m=4*3'14*10-7, r=10,i=100   ,B=4*3.14*10-7**100/2*10=6.28*10-7  

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