Question:medium

A horizontal overhead powerline is at a height of 4m from the ground and carries a current of 100A from east to west. The magnetic field directly below it on the ground is \( \mu_0 I / 2 \pi r \). What is the magnetic field at this point?

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Use the right-hand rule to determine the direction of the magnetic field due to a current.
Updated On: Mar 25, 2026
  • \( 2 \times 10^{-7} \, \text{T} \) southward
  • \( 5 \times 10^{-7} \, \text{T} \) northward
  • \( 5 \times 10^{-7} \, \text{T} \) southward
  • \( 2 \times 10^{-7} \, \text{T} \) northward
Show Solution

The Correct Option is C

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