Currents in dc transmission lines can be 100 A or higher. Some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. Part A For a line that has current 190 A and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? Express your answer in teslas. Express your answer in teslas. ? B =

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Chapter1: Units, Trigonometry. And Vectors
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Review I Constants
Currents in dc transmission lines can be 100 A or higher. Some
people are concerned that the electromagnetic fields from such
lines near their homes could pose health dangers.
Part A
For a line that has current 190 A and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? Express your answer in
teslas.
Express your answer in teslas.
%3D
Submit
Request Answer
Part B
What magnetic field does the line produce at ground level as a percent of the earth's magnetic field, which is 0.50 G.
Express your answer as a percentage.
?
В
ВЕ
Submit
Request Answer
Part C
Is this value of magnetic field cause for worry?
No. Since this field is much smaller than the earth's magnetic field, it would be expected to have less effect than the earth's field.
No. Since this field does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field.
Yes. Since this field is much greater than the earth's magnetic field, it would be expected to have more effect than the earth's field.
Yes. Since this field does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field.
Transcribed Image Text:Review I Constants Currents in dc transmission lines can be 100 A or higher. Some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. Part A For a line that has current 190 A and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? Express your answer in teslas. Express your answer in teslas. %3D Submit Request Answer Part B What magnetic field does the line produce at ground level as a percent of the earth's magnetic field, which is 0.50 G. Express your answer as a percentage. ? В ВЕ Submit Request Answer Part C Is this value of magnetic field cause for worry? No. Since this field is much smaller than the earth's magnetic field, it would be expected to have less effect than the earth's field. No. Since this field does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field. Yes. Since this field is much greater than the earth's magnetic field, it would be expected to have more effect than the earth's field. Yes. Since this field does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field.
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