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Magnetics question

2008 · Shift 0 · Q64
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Magnetics question

2008 · Shift 0 · Q64

JEE MainPhysicsMagneticsMCQ+4 / −1
A horizontal overhead powerline is at height of 4m4m4m from the ground and carries a current of 100A100A100A from east to west. The magnetic field directly below it on the ground is (μ0=4π×10−7  Tm  A−1)\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}\,\,Tm\,\,{A^{ - 1}}} \right)(μ0​=4π×10−7TmA−1)
  1. A
    2.5×10−7 T2.5 \times {10^{ - 7}}\,T2.5×10−7T southward
  2. B
    5×10−6 T5 \times {10^{ - 6}}\,T5×10−6T northward
  3. C
    5×10−6 T5 \times {10^{ - 6}}\,T5×10−6T southward
  4. D
    2.5×10−7 T2.5 \times {10^{ - 7}}\,T2.5×10−7T northward
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