Question

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. a) For a line that has current 110 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. 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.

Name: 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 a for a line tha 58953
Uploaded: 2022-05-05T15:41:19-08:00
Duration: 3 min 17 s
Channel: Adi S
Description: 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 a for a line tha 58953

          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.
a) For a line that has current 110 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.
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.

Added by David S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

05/05/2022

Step 1

Here, the current I is 110 A and the distance r is 8.0 m. So, the magnetic field at ground level is B = (4π x 10^-7 T m/A x 110 A) / (2π x 8.0 m) = 2.75 x 10^-6 T. Show more…

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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. a) For a line that has current 110 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. 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.