annie

You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11m above the ground. The local power company tells you that the line operates at 13kV and provide a maximum of 86MW to the local area.

Estimate the maximum magnetic field you might experience walking under such a power line, and compare to the Earth's field. [For an ac current, values are rms, and the magnetic field will be changing.]

1. 👍 0
2. 👎 0
3. 👁 105
1. !@#\$%^&vk

1. 👍 0
2. 👎 0
posted by you

Similar Questions

1. kw university

You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11 above the ground. The local power company tells you that the line operates at 16 and

asked by mma on May 20, 2012
2. physics

A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel

asked by Sandhya on May 15, 2011
3. physics-Electric & magnetic fields

A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel

asked by Sandhya on May 15, 2011
4. physics

A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel

asked by Sandhya on May 14, 2011
5. Current/Magnetic force

A high voltage power line carries a current of 110 A at a location where the Earth's magnetic fields has a magnitude of 5.9 x 10^-4 T and points north at an angle of72 degrees below the horizontal (toward the earth surface). Find

asked by Matt on April 5, 2012
6. Physics

A magnetic field has a magnitude of 1.2 10-3 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 µC charge moves at a speed of 2.9 106 m/s in a direction that is

asked by Mary on September 27, 2007
7. physics

A magnetic field has a magnitude of 1.20 10-3 T, and an electric field has a magnitude of 5.50 103 N/C. Both fields point in the same direction. A positive 1.8-µC charge moves at a speed of 2.60 106 m/s in a direction that is

asked by aml on February 8, 2011
8. Physics repost

A magnetic field has a magnitude of 1.2 10-3 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 µC charge moves at a speed of 2.9 106 m/s in a direction that is

asked by Mary on September 29, 2007
9. Physics!!

An electromagnetic wave is produced by: A. an accelerating charged particle or changing magnetic fields B. an accelerating uncharged particle and changing magnetic fields C. a stationary charged particle and a magnetic field D.

asked by sophie on April 12, 2009
10. Physics

1.How can you easily increase the magnetic field strength inside a current-carrying coil? 2.What is a magnetic domain? What is the difference between an ordinary iron nail and a permanent magnet? How does the idea of magnetic

asked by Will on November 2, 2007

More Similar Questions