anonymous
  • anonymous
A 6.0 m section of wire carries a current of 5.2 A from east to west in the earth's magnetic field of 1.0 × 10^-5 T at a location where the magnetic field points south. In which direction does the magnetic force act on the wire? north, south, up, or down ?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Michele_Laino
  • Michele_Laino
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anonymous
  • anonymous
down?
Michele_Laino
  • Michele_Laino
we have to compute the magnitude of the magnetic field due to the wire

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anonymous
  • anonymous
how can we do that? what does it mean?
Michele_Laino
  • Michele_Laino
since we have to do a vector sum between the magnetic field of the wire and the earth's magnetic field
anonymous
  • anonymous
ohh so it is moving south?
Michele_Laino
  • Michele_Laino
please sorry, it is not necessary to compute the magnetic field due to the wire
anonymous
  • anonymous
ahh okie!
anonymous
  • anonymous
so what does that mean? south is our solution?
Michele_Laino
  • Michele_Laino
the answer is up, since the magnetic forc acting on that wire is given by the subsequent formula: \[{\mathbf{F}} = I\;{\mathbf{l}} \times {\mathbf{B}}\] where x stands for vector product. So the direction of the force is up with respect to the plane of the drawing
anonymous
  • anonymous
ohhh okay! :O thank you!! that makes sense:)
Michele_Laino
  • Michele_Laino
|dw:1434315132306:dw|

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